fix: use of generic oauth provider (#5345)

Adds a id_attribute to the GenericOAuthProvider, which is used to map the external User. Further mapping can be done in actions by using the `rawInfo` of the new `ctx.v1.providerInfo` field.

docs/docs/apis/actions/external-authentication.md

@@ -26,6 +26,9 @@ The first parameter contains the following fields
       This is a verification errors string representation. If the verification succeeds, this is "none"
     - `authRequest` [*auth request*](/docs/apis/actions/objects#auth-request)
     - `httpRequest` [*http request*](/docs/apis/actions/objects#http-request)
+    - `providerInfo` *Any*  
+      Returns the response of the provider. In case the provider is a Generic OAuth Provider, the information is accessible through:
+      - `rawInfo`  *Any*
 - `api`  
   The second parameter contains the following fields
   - `v1`

internal/api/grpc/admin/idp_converter.go

@@ -210,6 +210,7 @@ func addGenericOAuthProviderToCommand(req *admin_pb.AddGenericOAuthProviderReque
 		TokenEndpoint:         req.TokenEndpoint,
 		UserEndpoint:          req.UserEndpoint,
 		Scopes:                req.Scopes,
+		IDAttribute:           req.IdAttribute,
 		IDPOptions:            idp_grpc.OptionsToCommand(req.ProviderOptions),
 	}
 }
@@ -223,6 +224,7 @@ func updateGenericOAuthProviderToCommand(req *admin_pb.UpdateGenericOAuthProvide
 		TokenEndpoint:         req.TokenEndpoint,
 		UserEndpoint:          req.UserEndpoint,
 		Scopes:                req.Scopes,
+		IDAttribute:           req.IdAttribute,
 		IDPOptions:            idp_grpc.OptionsToCommand(req.ProviderOptions),
 	}
 }

internal/api/grpc/management/idp_converter.go

@@ -227,6 +227,7 @@ func addGenericOAuthProviderToCommand(req *mgmt_pb.AddGenericOAuthProviderReques
 		TokenEndpoint:         req.TokenEndpoint,
 		UserEndpoint:          req.UserEndpoint,
 		Scopes:                req.Scopes,
+		IDAttribute:           req.IdAttribute,
 		IDPOptions:            idp_grpc.OptionsToCommand(req.ProviderOptions),
 	}
 }
@@ -240,6 +241,7 @@ func updateGenericOAuthProviderToCommand(req *mgmt_pb.UpdateGenericOAuthProvider
 		TokenEndpoint:         req.TokenEndpoint,
 		UserEndpoint:          req.UserEndpoint,
 		Scopes:                req.Scopes,
+		IDAttribute:           req.IdAttribute,
 		IDPOptions:            idp_grpc.OptionsToCommand(req.ProviderOptions),
 	}
 }

internal/api/ui/login/custom_action.go

@@ -13,6 +13,7 @@ import (
 	"github.com/zitadel/zitadel/internal/actions/object"
 	"github.com/zitadel/zitadel/internal/api/authz"
 	"github.com/zitadel/zitadel/internal/domain"
+	"github.com/zitadel/zitadel/internal/idp"
 )
 
 func (l *Login) runPostExternalAuthenticationActions(
@@ -20,6 +21,7 @@ func (l *Login) runPostExternalAuthenticationActions(
 	tokens *oidc.Tokens,
 	authRequest *domain.AuthRequest,
 	httpRequest *http.Request,
+	idpUser idp.User,
 	authenticationError error,
 ) (*domain.ExternalUser, error) {
 	ctx := httpRequest.Context()
@@ -86,6 +88,9 @@ func (l *Login) runPostExternalAuthenticationActions(
 				actions.SetFields("externalUser", func(c *actions.FieldConfig) interface{} {
 					return object.UserFromExternalUser(c, user)
 				}),
+				actions.SetFields("providerInfo", func(c *actions.FieldConfig) interface{} {
+					return c.Runtime.ToValue(idpUser)
+				}),
 				actions.SetFields("authRequest", object.AuthRequestField(authRequest)),
 				actions.SetFields("httpRequest", object.HTTPRequestField(httpRequest)),
 				actions.SetFields("authError", authErrStr),
@@ -337,18 +342,39 @@ func (l *Login) runPostCreationActions(
 }
 
 func tokenCtxFields(tokens *oidc.Tokens) []actions.FieldOption {
-	return []actions.FieldOption{
+	var accessToken, idToken string
-		actions.SetFields("accessToken", tokens.AccessToken),
+	getClaim := func(claim string) interface{} {
-		actions.SetFields("idToken", tokens.IDToken),
+		return nil
-		actions.SetFields("getClaim", func(claim string) interface{} {
+	}
+	claimsJSON := func() (string, error) {
+		return "", nil
+	}
+	if tokens == nil {
+		return []actions.FieldOption{
+			actions.SetFields("accessToken", accessToken),
+			actions.SetFields("idToken", idToken),
+			actions.SetFields("getClaim", getClaim),
+			actions.SetFields("claimsJSON", claimsJSON),
+		}
+	}
+	accessToken = tokens.AccessToken
+	idToken = tokens.IDToken
+	if tokens.IDTokenClaims != nil {
+		getClaim = func(claim string) interface{} {
 			return tokens.IDTokenClaims.GetClaim(claim)
-		}),
+		}
-		actions.SetFields("claimsJSON", func() (string, error) {
+		claimsJSON = func() (string, error) {
 			c, err := json.Marshal(tokens.IDTokenClaims)
 			if err != nil {
 				return "", err
 			}
 			return string(c), nil
-		}),
+		}
+	}
+	return []actions.FieldOption{
+		actions.SetFields("accessToken", accessToken),
+		actions.SetFields("idToken", idToken),
+		actions.SetFields("getClaim", getClaim),
+		actions.SetFields("claimsJSON", claimsJSON),
 	}
 }

internal/api/ui/login/external_provider_handler.go

@@ -20,6 +20,7 @@ import (
 	"github.com/zitadel/zitadel/internal/idp"
 	"github.com/zitadel/zitadel/internal/idp/providers/google"
 	"github.com/zitadel/zitadel/internal/idp/providers/jwt"
+	"github.com/zitadel/zitadel/internal/idp/providers/oauth"
 	openid "github.com/zitadel/zitadel/internal/idp/providers/oidc"
 	"github.com/zitadel/zitadel/internal/query"
 )
@@ -134,14 +135,15 @@ func (l *Login) handleIDP(w http.ResponseWriter, r *http.Request, authReq *domai
 	}
 	var provider idp.Provider
 	switch identityProvider.Type {
+	case domain.IDPTypeOAuth:
+		provider, err = l.oauthProvider(r.Context(), identityProvider)
 	case domain.IDPTypeOIDC:
 		provider, err = l.oidcProvider(r.Context(), identityProvider)
 	case domain.IDPTypeJWT:
 		provider, err = l.jwtProvider(identityProvider)
 	case domain.IDPTypeGoogle:
 		provider, err = l.googleProvider(r.Context(), identityProvider)
-	case domain.IDPTypeOAuth,
+	case domain.IDPTypeLDAP,
-		domain.IDPTypeLDAP,
 		domain.IDPTypeAzureAD,
 		domain.IDPTypeGitHub,
 		domain.IDPTypeGitHubEE,
@@ -177,33 +179,39 @@ func (l *Login) handleExternalLoginCallback(w http.ResponseWriter, r *http.Reque
 	userAgentID, _ := http_mw.UserAgentIDFromCtx(r.Context())
 	authReq, err := l.authRepo.AuthRequestByID(r.Context(), data.State, userAgentID)
 	if err != nil {
-		l.externalAuthFailed(w, r, authReq, nil, err)
+		l.externalAuthFailed(w, r, authReq, nil, nil, err)
 		return
 	}
 	identityProvider, err := l.getIDPByID(r, authReq.SelectedIDPConfigID)
 	if err != nil {
-		l.externalAuthFailed(w, r, authReq, nil, err)
+		l.externalAuthFailed(w, r, authReq, nil, nil, err)
 		return
 	}
 	var provider idp.Provider
 	var session idp.Session
 	switch identityProvider.Type {
+	case domain.IDPTypeOAuth:
+		provider, err = l.oauthProvider(r.Context(), identityProvider)
+		if err != nil {
+			l.externalAuthFailed(w, r, authReq, nil, nil, err)
+			return
+		}
+		session = &oauth.Session{Provider: provider.(*oauth.Provider), Code: data.Code}
 	case domain.IDPTypeOIDC:
 		provider, err = l.oidcProvider(r.Context(), identityProvider)
 		if err != nil {
-			l.externalAuthFailed(w, r, authReq, nil, err)
+			l.externalAuthFailed(w, r, authReq, nil, nil, err)
 			return
 		}
 		session = &openid.Session{Provider: provider.(*openid.Provider), Code: data.Code}
 	case domain.IDPTypeGoogle:
 		provider, err = l.googleProvider(r.Context(), identityProvider)
 		if err != nil {
-			l.externalAuthFailed(w, r, authReq, nil, err)
+			l.externalAuthFailed(w, r, authReq, nil, nil, err)
 			return
 		}
 		session = &openid.Session{Provider: provider.(*google.Provider).Provider, Code: data.Code}
 	case domain.IDPTypeJWT,
-		domain.IDPTypeOAuth,
 		domain.IDPTypeLDAP,
 		domain.IDPTypeAzureAD,
 		domain.IDPTypeGitHub,
@@ -219,7 +227,7 @@ func (l *Login) handleExternalLoginCallback(w http.ResponseWriter, r *http.Reque
 
 	user, err := session.FetchUser(r.Context())
 	if err != nil {
-		l.externalAuthFailed(w, r, authReq, tokens(session), err)
+		l.externalAuthFailed(w, r, authReq, tokens(session), user, err)
 		return
 	}
 	l.handleExternalUserAuthenticated(w, r, authReq, identityProvider, session, user, l.renderNextStep)
@@ -236,7 +244,7 @@ func (l *Login) handleExternalUserAuthenticated(
 	callback func(w http.ResponseWriter, r *http.Request, authReq *domain.AuthRequest),
 ) {
 	externalUser := mapIDPUserToExternalUser(user, provider.ID)
-	externalUser, err := l.runPostExternalAuthenticationActions(externalUser, tokens(session), authReq, r, nil)
+	externalUser, err := l.runPostExternalAuthenticationActions(externalUser, tokens(session), authReq, r, user, nil)
 	if err != nil {
 		l.renderError(w, r, authReq, err)
 		return
@@ -600,6 +608,31 @@ func (l *Login) jwtProvider(identityProvider *query.IDPTemplate) (*jwt.Provider,
 	)
 }
 
+func (l *Login) oauthProvider(ctx context.Context, identityProvider *query.IDPTemplate) (*oauth.Provider, error) {
+	secret, err := crypto.DecryptString(identityProvider.OAuthIDPTemplate.ClientSecret, l.idpConfigAlg)
+	if err != nil {
+		return nil, err
+	}
+	config := &oauth2.Config{
+		ClientID:     identityProvider.OAuthIDPTemplate.ClientID,
+		ClientSecret: secret,
+		Endpoint: oauth2.Endpoint{
+			AuthURL:  identityProvider.OAuthIDPTemplate.AuthorizationEndpoint,
+			TokenURL: identityProvider.OAuthIDPTemplate.TokenEndpoint,
+		},
+		RedirectURL: l.baseURL(ctx) + EndpointExternalLoginCallback,
+		Scopes:      identityProvider.OAuthIDPTemplate.Scopes,
+	}
+	return oauth.New(
+		config,
+		identityProvider.Name,
+		identityProvider.OAuthIDPTemplate.UserEndpoint,
+		func() idp.User {
+			return oauth.NewUserMapper(identityProvider.OAuthIDPTemplate.IDAttribute)
+		},
+	)
+}
+
 func (l *Login) appendUserGrants(ctx context.Context, userGrants []*domain.UserGrant, resourceOwner string) error {
 	if len(userGrants) == 0 {
 		return nil
@@ -613,11 +646,8 @@ func (l *Login) appendUserGrants(ctx context.Context, userGrants []*domain.UserG
 	return nil
 }
 
-func (l *Login) externalAuthFailed(w http.ResponseWriter, r *http.Request, authReq *domain.AuthRequest, tokens *oidc.Tokens, err error) {
+func (l *Login) externalAuthFailed(w http.ResponseWriter, r *http.Request, authReq *domain.AuthRequest, tokens *oidc.Tokens, user idp.User, err error) {
-	if tokens == nil {
+	if _, actionErr := l.runPostExternalAuthenticationActions(&domain.ExternalUser{}, tokens, authReq, r, user, err); actionErr != nil {
-		tokens = &oidc.Tokens{Token: &oauth2.Token{}}
-	}
-	if _, actionErr := l.runPostExternalAuthenticationActions(&domain.ExternalUser{}, tokens, authReq, r, err); actionErr != nil {
 		logging.WithError(err).Error("both external user authentication and action post authentication failed")
 	}
 	l.renderLogin(w, r, authReq, err)

internal/api/ui/login/jwt_handler.go

@@ -66,8 +66,7 @@ func (l *Login) handleJWTRequest(w http.ResponseWriter, r *http.Request) {
 func (l *Login) handleJWTExtraction(w http.ResponseWriter, r *http.Request, authReq *domain.AuthRequest, identityProvider *query.IDPTemplate) {
 	token, err := getToken(r, identityProvider.JWTIDPTemplate.HeaderName)
 	if err != nil {
-		emptyTokens := &oidc.Tokens{Token: &oauth2.Token{}}
+		if _, actionErr := l.runPostExternalAuthenticationActions(new(domain.ExternalUser), nil, authReq, r, nil, err); actionErr != nil {
-		if _, actionErr := l.runPostExternalAuthenticationActions(&domain.ExternalUser{}, emptyTokens, authReq, r, err); actionErr != nil {
 			logging.WithError(err).Error("both external user authentication and action post authentication failed")
 		}
 
@@ -76,8 +75,7 @@ func (l *Login) handleJWTExtraction(w http.ResponseWriter, r *http.Request, auth
 	}
 	provider, err := l.jwtProvider(identityProvider)
 	if err != nil {
-		emptyTokens := &oidc.Tokens{Token: &oauth2.Token{}}
+		if _, actionErr := l.runPostExternalAuthenticationActions(new(domain.ExternalUser), nil, authReq, r, nil, err); actionErr != nil {
-		if _, actionErr := l.runPostExternalAuthenticationActions(&domain.ExternalUser{}, emptyTokens, authReq, r, err); actionErr != nil {
 			logging.WithError(err).Error("both external user authentication and action post authentication failed")
 		}
 		l.renderError(w, r, authReq, err)
@@ -86,7 +84,7 @@ func (l *Login) handleJWTExtraction(w http.ResponseWriter, r *http.Request, auth
 	session := &jwt.Session{Provider: provider, Tokens: &oidc.Tokens{IDToken: token, Token: &oauth2.Token{}}}
 	user, err := session.FetchUser(r.Context())
 	if err != nil {
-		if _, actionErr := l.runPostExternalAuthenticationActions(&domain.ExternalUser{}, tokens(session), authReq, r, err); actionErr != nil {
+		if _, actionErr := l.runPostExternalAuthenticationActions(new(domain.ExternalUser), tokens(session), authReq, r, user, err); actionErr != nil {
 			logging.WithError(err).Error("both external user authentication and action post authentication failed")
 		}
 		l.renderError(w, r, authReq, err)

internal/command/idp.go

@@ -16,6 +16,7 @@ type GenericOAuthProvider struct {
 	TokenEndpoint         string
 	UserEndpoint          string
 	Scopes                []string
+	IDAttribute           string
 	IDPOptions            idp.Options
 }
 

internal/command/idp_model.go

@@ -21,6 +21,7 @@ type OAuthIDPWriteModel struct {
 	TokenEndpoint         string
 	UserEndpoint          string
 	Scopes                []string
+	IDAttribute           string
 	idp.Options
 
 	State domain.IDPState
@@ -48,6 +49,7 @@ func (wm *OAuthIDPWriteModel) reduceAddedEvent(e *idp.OAuthIDPAddedEvent) {
 	wm.TokenEndpoint = e.TokenEndpoint
 	wm.UserEndpoint = e.UserEndpoint
 	wm.Scopes = e.Scopes
+	wm.IDAttribute = e.IDAttribute
 	wm.State = domain.IDPStateActive
 }
 
@@ -73,6 +75,9 @@ func (wm *OAuthIDPWriteModel) reduceChangedEvent(e *idp.OAuthIDPChangedEvent) {
 	if e.Scopes != nil {
 		wm.Scopes = e.Scopes
 	}
+	if e.IDAttribute != nil {
+		wm.IDAttribute = *e.IDAttribute
+	}
 	wm.Options.ReduceChanges(e.OptionChanges)
 }
 
@@ -83,7 +88,8 @@ func (wm *OAuthIDPWriteModel) NewChanges(
 	secretCrypto crypto.Crypto,
 	authorizationEndpoint,
 	tokenEndpoint,
-	userEndpoint string,
+	userEndpoint,
+	idAttribute string,
 	scopes []string,
 	options idp.Options,
 ) ([]idp.OAuthIDPChanges, error) {
@@ -115,6 +121,9 @@ func (wm *OAuthIDPWriteModel) NewChanges(
 	if !reflect.DeepEqual(wm.Scopes, scopes) {
 		changes = append(changes, idp.ChangeOAuthScopes(scopes))
 	}
+	if wm.IDAttribute != idAttribute {
+		changes = append(changes, idp.ChangeOAuthIDAttribute(idAttribute))
+	}
 	opts := wm.Options.Changes(options)
 	if !opts.IsZero() {
 		changes = append(changes, idp.ChangeOAuthOptions(opts))

internal/command/instance_idp.go

@@ -273,6 +273,9 @@ func (c *Commands) prepareAddInstanceOAuthProvider(a *instance.Aggregate, writeM
 		if provider.UserEndpoint = strings.TrimSpace(provider.UserEndpoint); provider.UserEndpoint == "" {
 			return nil, caos_errs.ThrowInvalidArgument(nil, "INST-Fb8jk", "Errors.Invalid.Argument")
 		}
+		if provider.IDAttribute = strings.TrimSpace(provider.IDAttribute); provider.IDAttribute == "" {
+			return nil, caos_errs.ThrowInvalidArgument(nil, "INST-sdf3f", "Errors.Invalid.Argument")
+		}
 		return func(ctx context.Context, filter preparation.FilterToQueryReducer) ([]eventstore.Command, error) {
 			events, err := filter(ctx, writeModel.Query())
 			if err != nil {
@@ -297,6 +300,7 @@ func (c *Commands) prepareAddInstanceOAuthProvider(a *instance.Aggregate, writeM
 					provider.AuthorizationEndpoint,
 					provider.TokenEndpoint,
 					provider.UserEndpoint,
+					provider.IDAttribute,
 					provider.Scopes,
 					provider.IDPOptions,
 				),
@@ -322,6 +326,9 @@ func (c *Commands) prepareUpdateInstanceOAuthProvider(a *instance.Aggregate, wri
 		if provider.UserEndpoint = strings.TrimSpace(provider.UserEndpoint); provider.UserEndpoint == "" {
 			return nil, caos_errs.ThrowInvalidArgument(nil, "INST-Fb8jk", "Errors.Invalid.Argument")
 		}
+		if provider.IDAttribute = strings.TrimSpace(provider.IDAttribute); provider.IDAttribute == "" {
+			return nil, caos_errs.ThrowInvalidArgument(nil, "INST-asf3fs", "Errors.Invalid.Argument")
+		}
 		return func(ctx context.Context, filter preparation.FilterToQueryReducer) ([]eventstore.Command, error) {
 			events, err := filter(ctx, writeModel.Query())
 			if err != nil {
@@ -345,6 +352,7 @@ func (c *Commands) prepareUpdateInstanceOAuthProvider(a *instance.Aggregate, wri
 				provider.AuthorizationEndpoint,
 				provider.TokenEndpoint,
 				provider.UserEndpoint,
+				provider.IDAttribute,
 				provider.Scopes,
 				provider.IDPOptions,
 			)

internal/command/instance_idp_model.go

@@ -67,7 +67,8 @@ func (wm *InstanceOAuthIDPWriteModel) NewChangedEvent(
 	secretCrypto crypto.Crypto,
 	authorizationEndpoint,
 	tokenEndpoint,
-	userEndpoint string,
+	userEndpoint,
+	idAttribute string,
 	scopes []string,
 	options idp.Options,
 ) (*instance.OAuthIDPChangedEvent, error) {
@@ -80,6 +81,7 @@ func (wm *InstanceOAuthIDPWriteModel) NewChangedEvent(
 		authorizationEndpoint,
 		tokenEndpoint,
 		userEndpoint,
+		idAttribute,
 		scopes,
 		options,
 	)

internal/command/instance_idp_test.go

@@ -145,6 +145,27 @@ func TestCommandSide_AddInstanceGenericOAuthIDP(t *testing.T) {
 				err: caos_errors.IsErrorInvalidArgument,
 			},
 		},
+		{
+			"invalid id attribute",
+			fields{
+				eventstore:  eventstoreExpect(t),
+				idGenerator: id_mock.NewIDGeneratorExpectIDs(t, "id1"),
+			},
+			args{
+				ctx: authz.WithInstanceID(context.Background(), "instance1"),
+				provider: GenericOAuthProvider{
+					Name:                  "name",
+					ClientID:              "clientID",
+					ClientSecret:          "clientSecret",
+					AuthorizationEndpoint: "auth",
+					TokenEndpoint:         "token",
+					UserEndpoint:          "user",
+				},
+			},
+			res{
+				err: caos_errors.IsErrorInvalidArgument,
+			},
+		},
 		{
 			name: "ok",
 			fields: fields{
@@ -167,6 +188,7 @@ func TestCommandSide_AddInstanceGenericOAuthIDP(t *testing.T) {
 									"auth",
 									"token",
 									"user",
+									"idAttribute",
 									nil,
 									idp.Options{},
 								)),
@@ -185,6 +207,7 @@ func TestCommandSide_AddInstanceGenericOAuthIDP(t *testing.T) {
 					AuthorizationEndpoint: "auth",
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
+					IDAttribute:           "idAttribute",
 				},
 			},
 			res: res{
@@ -214,6 +237,7 @@ func TestCommandSide_AddInstanceGenericOAuthIDP(t *testing.T) {
 									"auth",
 									"token",
 									"user",
+									"idAttribute",
 									[]string{"user"},
 									idp.Options{
 										IsCreationAllowed: true,
@@ -238,6 +262,7 @@ func TestCommandSide_AddInstanceGenericOAuthIDP(t *testing.T) {
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
 					Scopes:                []string{"user"},
+					IDAttribute:           "idAttribute",
 					IDPOptions: idp.Options{
 						IsCreationAllowed: true,
 						IsLinkingAllowed:  true,
@@ -390,6 +415,26 @@ func TestCommandSide_UpdateInstanceGenericOAuthIDP(t *testing.T) {
 				err: caos_errors.IsErrorInvalidArgument,
 			},
 		},
+		{
+			"invalid id attribute",
+			fields{
+				eventstore: eventstoreExpect(t),
+			},
+			args{
+				ctx: authz.WithInstanceID(context.Background(), "instance1"),
+				id:  "id1",
+				provider: GenericOAuthProvider{
+					Name:                  "name",
+					ClientID:              "clientID",
+					AuthorizationEndpoint: "auth",
+					TokenEndpoint:         "token",
+					UserEndpoint:          "user",
+				},
+			},
+			res{
+				err: caos_errors.IsErrorInvalidArgument,
+			},
+		},
 		{
 			name: "not found",
 			fields: fields{
@@ -406,6 +451,7 @@ func TestCommandSide_UpdateInstanceGenericOAuthIDP(t *testing.T) {
 					AuthorizationEndpoint: "auth",
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
+					IDAttribute:           "idAttribute",
 				},
 			},
 			res: res{
@@ -431,6 +477,7 @@ func TestCommandSide_UpdateInstanceGenericOAuthIDP(t *testing.T) {
 								"auth",
 								"token",
 								"user",
+								"idAttribute",
 								nil,
 								idp.Options{},
 							)),
@@ -446,6 +493,7 @@ func TestCommandSide_UpdateInstanceGenericOAuthIDP(t *testing.T) {
 					AuthorizationEndpoint: "auth",
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
+					IDAttribute:           "idAttribute",
 				},
 			},
 			res: res{
@@ -471,6 +519,7 @@ func TestCommandSide_UpdateInstanceGenericOAuthIDP(t *testing.T) {
 								"auth",
 								"token",
 								"user",
+								"idAttribute",
 								nil,
 								idp.Options{},
 							)),
@@ -496,6 +545,7 @@ func TestCommandSide_UpdateInstanceGenericOAuthIDP(t *testing.T) {
 											idp.ChangeOAuthTokenEndpoint("new token"),
 											idp.ChangeOAuthUserEndpoint("new user"),
 											idp.ChangeOAuthScopes([]string{"openid", "profile"}),
+											idp.ChangeOAuthIDAttribute("newAttribute"),
 											idp.ChangeOAuthOptions(idp.OptionChanges{
 												IsCreationAllowed: &t,
 												IsLinkingAllowed:  &t,
@@ -523,6 +573,7 @@ func TestCommandSide_UpdateInstanceGenericOAuthIDP(t *testing.T) {
 					TokenEndpoint:         "new token",
 					UserEndpoint:          "new user",
 					Scopes:                []string{"openid", "profile"},
+					IDAttribute:           "newAttribute",
 					IDPOptions: idp.Options{
 						IsCreationAllowed: true,
 						IsLinkingAllowed:  true,

internal/command/org_idp.go

@@ -262,6 +262,9 @@ func (c *Commands) prepareAddOrgOAuthProvider(a *org.Aggregate, writeModel *OrgO
 		if provider.UserEndpoint = strings.TrimSpace(provider.UserEndpoint); provider.UserEndpoint == "" {
 			return nil, caos_errs.ThrowInvalidArgument(nil, "ORG-Fb8jk", "Errors.Invalid.Argument")
 		}
+		if provider.IDAttribute = strings.TrimSpace(provider.IDAttribute); provider.IDAttribute == "" {
+			return nil, caos_errs.ThrowInvalidArgument(nil, "ORG-sadf3d", "Errors.Invalid.Argument")
+		}
 		return func(ctx context.Context, filter preparation.FilterToQueryReducer) ([]eventstore.Command, error) {
 			events, err := filter(ctx, writeModel.Query())
 			if err != nil {
@@ -286,6 +289,7 @@ func (c *Commands) prepareAddOrgOAuthProvider(a *org.Aggregate, writeModel *OrgO
 					provider.AuthorizationEndpoint,
 					provider.TokenEndpoint,
 					provider.UserEndpoint,
+					provider.IDAttribute,
 					provider.Scopes,
 					provider.IDPOptions,
 				),
@@ -314,6 +318,9 @@ func (c *Commands) prepareUpdateOrgOAuthProvider(a *org.Aggregate, writeModel *O
 		if provider.UserEndpoint = strings.TrimSpace(provider.UserEndpoint); provider.UserEndpoint == "" {
 			return nil, caos_errs.ThrowInvalidArgument(nil, "ORG-Fb8jk", "Errors.Invalid.Argument")
 		}
+		if provider.IDAttribute = strings.TrimSpace(provider.IDAttribute); provider.IDAttribute == "" {
+			return nil, caos_errs.ThrowInvalidArgument(nil, "ORG-SAe4gh", "Errors.Invalid.Argument")
+		}
 		return func(ctx context.Context, filter preparation.FilterToQueryReducer) ([]eventstore.Command, error) {
 			events, err := filter(ctx, writeModel.Query())
 			if err != nil {
@@ -337,6 +344,7 @@ func (c *Commands) prepareUpdateOrgOAuthProvider(a *org.Aggregate, writeModel *O
 				provider.AuthorizationEndpoint,
 				provider.TokenEndpoint,
 				provider.UserEndpoint,
+				provider.IDAttribute,
 				provider.Scopes,
 				provider.IDPOptions,
 			)

internal/command/org_idp_model.go

@@ -69,7 +69,8 @@ func (wm *OrgOAuthIDPWriteModel) NewChangedEvent(
 	secretCrypto crypto.Crypto,
 	authorizationEndpoint,
 	tokenEndpoint,
-	userEndpoint string,
+	userEndpoint,
+	idAttribute string,
 	scopes []string,
 	options idp.Options,
 ) (*org.OAuthIDPChangedEvent, error) {
@@ -82,6 +83,7 @@ func (wm *OrgOAuthIDPWriteModel) NewChangedEvent(
 		authorizationEndpoint,
 		tokenEndpoint,
 		userEndpoint,
+		idAttribute,
 		scopes,
 		options,
 	)

internal/command/org_idp_test.go

@@ -150,6 +150,28 @@ func TestCommandSide_AddOrgGenericOAuthIDP(t *testing.T) {
 				err: caos_errors.IsErrorInvalidArgument,
 			},
 		},
+		{
+			"invalid id attribute",
+			fields{
+				eventstore:  eventstoreExpect(t),
+				idGenerator: id_mock.NewIDGeneratorExpectIDs(t, "id1"),
+			},
+			args{
+				ctx:           context.Background(),
+				resourceOwner: "org1",
+				provider: GenericOAuthProvider{
+					Name:                  "name",
+					ClientID:              "clientID",
+					ClientSecret:          "clientSecret",
+					AuthorizationEndpoint: "auth",
+					TokenEndpoint:         "token",
+					UserEndpoint:          "user",
+				},
+			},
+			res{
+				err: caos_errors.IsErrorInvalidArgument,
+			},
+		},
 		{
 			name: "ok",
 			fields: fields{
@@ -170,6 +192,7 @@ func TestCommandSide_AddOrgGenericOAuthIDP(t *testing.T) {
 								"auth",
 								"token",
 								"user",
+								"idAttribute",
 								nil,
 								idp.Options{},
 							)),
@@ -188,6 +211,7 @@ func TestCommandSide_AddOrgGenericOAuthIDP(t *testing.T) {
 					AuthorizationEndpoint: "auth",
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
+					IDAttribute:           "idAttribute",
 				},
 			},
 			res: res{
@@ -215,6 +239,7 @@ func TestCommandSide_AddOrgGenericOAuthIDP(t *testing.T) {
 								"auth",
 								"token",
 								"user",
+								"idAttribute",
 								[]string{"user"},
 								idp.Options{
 									IsCreationAllowed: true,
@@ -239,6 +264,7 @@ func TestCommandSide_AddOrgGenericOAuthIDP(t *testing.T) {
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
 					Scopes:                []string{"user"},
+					IDAttribute:           "idAttribute",
 					IDPOptions: idp.Options{
 						IsCreationAllowed: true,
 						IsLinkingAllowed:  true,
@@ -398,6 +424,27 @@ func TestCommandSide_UpdateOrgGenericOAuthIDP(t *testing.T) {
 				err: caos_errors.IsErrorInvalidArgument,
 			},
 		},
+		{
+			"invalid id attribute",
+			fields{
+				eventstore: eventstoreExpect(t),
+			},
+			args{
+				ctx:           context.Background(),
+				resourceOwner: "org1",
+				id:            "id1",
+				provider: GenericOAuthProvider{
+					Name:                  "name",
+					ClientID:              "clientID",
+					AuthorizationEndpoint: "auth",
+					TokenEndpoint:         "token",
+					UserEndpoint:          "user",
+				},
+			},
+			res{
+				err: caos_errors.IsErrorInvalidArgument,
+			},
+		},
 		{
 			name: "not found",
 			fields: fields{
@@ -415,6 +462,7 @@ func TestCommandSide_UpdateOrgGenericOAuthIDP(t *testing.T) {
 					AuthorizationEndpoint: "auth",
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
+					IDAttribute:           "idAttribute",
 				},
 			},
 			res: res{
@@ -440,6 +488,7 @@ func TestCommandSide_UpdateOrgGenericOAuthIDP(t *testing.T) {
 								"auth",
 								"token",
 								"user",
+								"idAttribute",
 								nil,
 								idp.Options{},
 							)),
@@ -456,6 +505,7 @@ func TestCommandSide_UpdateOrgGenericOAuthIDP(t *testing.T) {
 					AuthorizationEndpoint: "auth",
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
+					IDAttribute:           "idAttribute",
 				},
 			},
 			res: res{
@@ -481,6 +531,7 @@ func TestCommandSide_UpdateOrgGenericOAuthIDP(t *testing.T) {
 								"auth",
 								"token",
 								"user",
+								"idAttribute",
 								nil,
 								idp.Options{},
 							)),
@@ -504,6 +555,7 @@ func TestCommandSide_UpdateOrgGenericOAuthIDP(t *testing.T) {
 										idp.ChangeOAuthTokenEndpoint("new token"),
 										idp.ChangeOAuthUserEndpoint("new user"),
 										idp.ChangeOAuthScopes([]string{"openid", "profile"}),
+										idp.ChangeOAuthIDAttribute("newAttribute"),
 										idp.ChangeOAuthOptions(idp.OptionChanges{
 											IsCreationAllowed: &t,
 											IsLinkingAllowed:  &t,
@@ -531,6 +583,7 @@ func TestCommandSide_UpdateOrgGenericOAuthIDP(t *testing.T) {
 					TokenEndpoint:         "new token",
 					UserEndpoint:          "new user",
 					Scopes:                []string{"openid", "profile"},
+					IDAttribute:           "newAttribute",
 					IDPOptions: idp.Options{
 						IsCreationAllowed: true,
 						IsLinkingAllowed:  true,

internal/idp/providers/oauth/mapper.go

@@ -2,6 +2,8 @@ package oauth
 
 import (
 	"encoding/json"
+	"fmt"
+	"strconv"
 
 	"golang.org/x/text/language"
 
@@ -11,92 +13,97 @@ import (
 var _ idp.User = (*UserMapper)(nil)
 
 // UserMapper is an implementation of [idp.User].
-// It can be used in ZITADEL actions to map the raw `info`
+// It can be used in ZITADEL actions to map the `RawInfo`
 type UserMapper struct {
-	ID                string
+	idAttribute string
-	FirstName         string
+	RawInfo     map[string]interface{}
-	LastName          string
+}
-	DisplayName       string
+
-	NickName          string
+func NewUserMapper(idAttribute string) *UserMapper {
-	PreferredUsername string
+	return &UserMapper{
-	Email             string
+		idAttribute: idAttribute,
-	EmailVerified     bool
+		RawInfo:     make(map[string]interface{}),
-	Phone             string
+	}
-	PhoneVerified     bool
-	PreferredLanguage string
-	AvatarURL         string
-	Profile           string
-	info              map[string]interface{}
 }
 
 func (u *UserMapper) UnmarshalJSON(data []byte) error {
-	if u.info == nil {
+	return json.Unmarshal(data, &u.RawInfo)
-		u.info = make(map[string]interface{})
-	}
-	return json.Unmarshal(data, &u.info)
 }
 
 // GetID is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetID() string {
-	return u.ID
+	id, ok := u.RawInfo[u.idAttribute]
+	if !ok {
+		return ""
+	}
+	switch i := id.(type) {
+	case string:
+		return i
+	case int:
+		return strconv.Itoa(i)
+	case float64:
+		return strconv.FormatFloat(i, 'f', -1, 64)
+	default:
+		return fmt.Sprint(i)
+	}
 }
 
 // GetFirstName is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetFirstName() string {
-	return u.FirstName
+	return ""
 }
 
 // GetLastName is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetLastName() string {
-	return u.LastName
+	return ""
 }
 
 // GetDisplayName is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetDisplayName() string {
-	return u.DisplayName
+	return ""
 }
 
 // GetNickname is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetNickname() string {
-	return u.NickName
+	return ""
 }
 
 // GetPreferredUsername is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetPreferredUsername() string {
-	return u.PreferredUsername
+	return ""
 }
 
 // GetEmail is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetEmail() string {
-	return u.Email
+	return ""
 }
 
 // IsEmailVerified is an implementation of the [idp.User] interface.
 func (u *UserMapper) IsEmailVerified() bool {
-	return u.EmailVerified
+	return false
 }
 
 // GetPhone is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetPhone() string {
-	return u.Phone
+	return ""
 }
 
 // IsPhoneVerified is an implementation of the [idp.User] interface.
 func (u *UserMapper) IsPhoneVerified() bool {
-	return u.PhoneVerified
+	return false
 }
 
 // GetPreferredLanguage is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetPreferredLanguage() language.Tag {
-	return language.Make(u.PreferredLanguage)
+	return language.Und
 }
 
 // GetAvatarURL is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetAvatarURL() string {
-	return u.AvatarURL
+	return ""
 }
 
 // GetProfile is an implementation of the [idp.User] interface.
 func (u *UserMapper) GetProfile() string {
-	return u.Profile
+	return ""
 }

internal/idp/providers/oauth/session_test.go

@@ -93,9 +93,7 @@ func TestProvider_FetchUser(t *testing.T) {
 						Reply(http.StatusInternalServerError)
 				},
 				userMapper: func() idp.User {
-					return &UserMapper{
+					return NewUserMapper("userID")
-						ID: "userID",
-					}
 				},
 				authURL: "https://oauth2.com/authorize?client_id=clientID&redirect_uri=redirectURI&response_type=code&scope=user&state=testState",
 				tokens: &oidc.Tokens{
@@ -135,7 +133,7 @@ func TestProvider_FetchUser(t *testing.T) {
 						})
 				},
 				userMapper: func() idp.User {
-					return &UserMapper{}
+					return NewUserMapper("userID")
 				},
 				authURL: "https://issuer.com/authorize?client_id=clientID&redirect_uri=redirectURI&response_type=code&scope=user&state=testState",
 				tokens: &oidc.Tokens{
@@ -147,12 +145,13 @@ func TestProvider_FetchUser(t *testing.T) {
 			},
 			want: want{
 				user: &UserMapper{
-					info: map[string]interface{}{
+					idAttribute: "userID",
+					RawInfo: map[string]interface{}{
 						"userID": "id",
 						"custom": "claim",
 					},
 				},
-				id:                "",
+				id:                "id",
 				firstName:         "",
 				lastName:          "",
 				displayName:       "",
@@ -202,7 +201,7 @@ func TestProvider_FetchUser(t *testing.T) {
 						})
 				},
 				userMapper: func() idp.User {
-					return &UserMapper{}
+					return NewUserMapper("userID")
 				},
 				authURL: "https://issuer.com/authorize?client_id=clientID&redirect_uri=redirectURI&response_type=code&scope=user&state=testState",
 				tokens:  nil,
@@ -210,12 +209,13 @@ func TestProvider_FetchUser(t *testing.T) {
 			},
 			want: want{
 				user: &UserMapper{
-					info: map[string]interface{}{
+					idAttribute: "userID",
+					RawInfo: map[string]interface{}{
 						"userID": "id",
 						"custom": "claim",
 					},
 				},
-				id:                "",
+				id:                "id",
 				firstName:         "",
 				lastName:          "",
 				displayName:       "",

internal/query/idp_template.go

@@ -54,6 +54,7 @@ type OAuthIDPTemplate struct {
 	TokenEndpoint         string
 	UserEndpoint          string
 	Scopes                database.StringArray
+	IDAttribute           string
 }
 
 type OIDCIDPTemplate struct {
@@ -196,6 +197,10 @@ var (
 		name:  projection.OAuthScopesCol,
 		table: oauthIdpTemplateTable,
 	}
+	OAuthIDAttributeCol = Column{
+		name:  projection.OAuthIDAttributeCol,
+		table: oauthIdpTemplateTable,
+	}
 )
 
 var (
@@ -505,6 +510,7 @@ func prepareIDPTemplateByIDQuery(ctx context.Context, db prepareDatabase) (sq.Se
 			OAuthTokenEndpointCol.identifier(),
 			OAuthUserEndpointCol.identifier(),
 			OAuthScopesCol.identifier(),
+			OAuthIDAttributeCol.identifier(),
 			// oidc
 			OIDCIDCol.identifier(),
 			OIDCIssuerCol.identifier(),
@@ -564,6 +570,7 @@ func prepareIDPTemplateByIDQuery(ctx context.Context, db prepareDatabase) (sq.Se
 			oauthTokenEndpoint := sql.NullString{}
 			oauthUserEndpoint := sql.NullString{}
 			oauthScopes := database.StringArray{}
+			oauthIDAttribute := sql.NullString{}
 
 			oidcID := sql.NullString{}
 			oidcIssuer := sql.NullString{}
@@ -627,6 +634,7 @@ func prepareIDPTemplateByIDQuery(ctx context.Context, db prepareDatabase) (sq.Se
 				&oauthTokenEndpoint,
 				&oauthUserEndpoint,
 				&oauthScopes,
+				&oauthIDAttribute,
 				// oidc
 				&oidcID,
 				&oidcIssuer,
@@ -686,6 +694,7 @@ func prepareIDPTemplateByIDQuery(ctx context.Context, db prepareDatabase) (sq.Se
 					TokenEndpoint:         oauthTokenEndpoint.String,
 					UserEndpoint:          oauthUserEndpoint.String,
 					Scopes:                oauthScopes,
+					IDAttribute:           oauthIDAttribute.String,
 				}
 			}
 			if oidcID.Valid {
@@ -770,6 +779,7 @@ func prepareIDPTemplatesQuery(ctx context.Context, db prepareDatabase) (sq.Selec
 			OAuthTokenEndpointCol.identifier(),
 			OAuthUserEndpointCol.identifier(),
 			OAuthScopesCol.identifier(),
+			OAuthIDAttributeCol.identifier(),
 			// oidc
 			OIDCIDCol.identifier(),
 			OIDCIssuerCol.identifier(),
@@ -833,6 +843,7 @@ func prepareIDPTemplatesQuery(ctx context.Context, db prepareDatabase) (sq.Selec
 				oauthTokenEndpoint := sql.NullString{}
 				oauthUserEndpoint := sql.NullString{}
 				oauthScopes := database.StringArray{}
+				oauthIDAttribute := sql.NullString{}
 
 				oidcID := sql.NullString{}
 				oidcIssuer := sql.NullString{}
@@ -896,6 +907,7 @@ func prepareIDPTemplatesQuery(ctx context.Context, db prepareDatabase) (sq.Selec
 					&oauthTokenEndpoint,
 					&oauthUserEndpoint,
 					&oauthScopes,
+					&oauthIDAttribute,
 					// oidc
 					&oidcID,
 					&oidcIssuer,
@@ -954,6 +966,7 @@ func prepareIDPTemplatesQuery(ctx context.Context, db prepareDatabase) (sq.Selec
 						TokenEndpoint:         oauthTokenEndpoint.String,
 						UserEndpoint:          oauthUserEndpoint.String,
 						Scopes:                oauthScopes,
+						IDAttribute:           oauthIDAttribute.String,
 					}
 				}
 				if oidcID.Valid {

internal/query/idp_template_test.go

@@ -29,13 +29,14 @@ var (
 		` projections.idp_templates2.is_auto_creation,` +
 		` projections.idp_templates2.is_auto_update,` +
 		// oauth
-		` projections.idp_templates2_oauth.idp_id,` +
+		` projections.idp_templates2_oauth2.idp_id,` +
-		` projections.idp_templates2_oauth.client_id,` +
+		` projections.idp_templates2_oauth2.client_id,` +
-		` projections.idp_templates2_oauth.client_secret,` +
+		` projections.idp_templates2_oauth2.client_secret,` +
-		` projections.idp_templates2_oauth.authorization_endpoint,` +
+		` projections.idp_templates2_oauth2.authorization_endpoint,` +
-		` projections.idp_templates2_oauth.token_endpoint,` +
+		` projections.idp_templates2_oauth2.token_endpoint,` +
-		` projections.idp_templates2_oauth.user_endpoint,` +
+		` projections.idp_templates2_oauth2.user_endpoint,` +
-		` projections.idp_templates2_oauth.scopes,` +
+		` projections.idp_templates2_oauth2.scopes,` +
+		` projections.idp_templates2_oauth2.id_attribute,` +
 		// oidc
 		` projections.idp_templates2_oidc.idp_id,` +
 		` projections.idp_templates2_oidc.issuer,` +
@@ -77,7 +78,7 @@ var (
 		` projections.idp_templates2_ldap.avatar_url_attribute,` +
 		` projections.idp_templates2_ldap.profile_attribute` +
 		` FROM projections.idp_templates2` +
-		` LEFT JOIN projections.idp_templates2_oauth ON projections.idp_templates2.id = projections.idp_templates2_oauth.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_oauth.instance_id` +
+		` LEFT JOIN projections.idp_templates2_oauth2 ON projections.idp_templates2.id = projections.idp_templates2_oauth2.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_oauth2.instance_id` +
 		` LEFT JOIN projections.idp_templates2_oidc ON projections.idp_templates2.id = projections.idp_templates2_oidc.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_oidc.instance_id` +
 		` LEFT JOIN projections.idp_templates2_jwt ON projections.idp_templates2.id = projections.idp_templates2_jwt.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_jwt.instance_id` +
 		` LEFT JOIN projections.idp_templates2_google ON projections.idp_templates2.id = projections.idp_templates2_google.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_google.instance_id` +
@@ -105,6 +106,7 @@ var (
 		"token_endpoint",
 		"user_endpoint",
 		"scopes",
+		"id_attribute",
 		// oidc config
 		"id_id",
 		"issuer",
@@ -160,13 +162,14 @@ var (
 		` projections.idp_templates2.is_auto_creation,` +
 		` projections.idp_templates2.is_auto_update,` +
 		// oauth
-		` projections.idp_templates2_oauth.idp_id,` +
+		` projections.idp_templates2_oauth2.idp_id,` +
-		` projections.idp_templates2_oauth.client_id,` +
+		` projections.idp_templates2_oauth2.client_id,` +
-		` projections.idp_templates2_oauth.client_secret,` +
+		` projections.idp_templates2_oauth2.client_secret,` +
-		` projections.idp_templates2_oauth.authorization_endpoint,` +
+		` projections.idp_templates2_oauth2.authorization_endpoint,` +
-		` projections.idp_templates2_oauth.token_endpoint,` +
+		` projections.idp_templates2_oauth2.token_endpoint,` +
-		` projections.idp_templates2_oauth.user_endpoint,` +
+		` projections.idp_templates2_oauth2.user_endpoint,` +
-		` projections.idp_templates2_oauth.scopes,` +
+		` projections.idp_templates2_oauth2.scopes,` +
+		` projections.idp_templates2_oauth2.id_attribute,` +
 		// oidc
 		` projections.idp_templates2_oidc.idp_id,` +
 		` projections.idp_templates2_oidc.issuer,` +
@@ -209,7 +212,7 @@ var (
 		` projections.idp_templates2_ldap.profile_attribute,` +
 		` COUNT(*) OVER ()` +
 		` FROM projections.idp_templates2` +
-		` LEFT JOIN projections.idp_templates2_oauth ON projections.idp_templates2.id = projections.idp_templates2_oauth.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_oauth.instance_id` +
+		` LEFT JOIN projections.idp_templates2_oauth2 ON projections.idp_templates2.id = projections.idp_templates2_oauth2.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_oauth2.instance_id` +
 		` LEFT JOIN projections.idp_templates2_oidc ON projections.idp_templates2.id = projections.idp_templates2_oidc.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_oidc.instance_id` +
 		` LEFT JOIN projections.idp_templates2_jwt ON projections.idp_templates2.id = projections.idp_templates2_jwt.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_jwt.instance_id` +
 		` LEFT JOIN projections.idp_templates2_google ON projections.idp_templates2.id = projections.idp_templates2_google.idp_id AND projections.idp_templates2.instance_id = projections.idp_templates2_google.instance_id` +
@@ -237,6 +240,7 @@ var (
 		"token_endpoint",
 		"user_endpoint",
 		"scopes",
+		"id_attribute",
 		// oidc config
 		"id_id",
 		"issuer",
@@ -339,6 +343,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 						"token",
 						"user",
 						database.StringArray{"profile"},
+						"id-attribute",
 						// oidc
 						nil,
 						nil,
@@ -404,6 +409,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 					TokenEndpoint:         "token",
 					UserEndpoint:          "user",
 					Scopes:                []string{"profile"},
+					IDAttribute:           "id-attribute",
 				},
 			},
 		},
@@ -436,6 +442,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 						nil,
 						nil,
 						nil,
+						nil,
 						// oidc
 						"idp-id",
 						"issuer",
@@ -531,6 +538,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 						nil,
 						nil,
 						nil,
+						nil,
 						// oidc
 						nil,
 						nil,
@@ -626,6 +634,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 						nil,
 						nil,
 						nil,
+						nil,
 						// oidc
 						nil,
 						nil,
@@ -720,6 +729,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 						nil,
 						nil,
 						nil,
+						nil,
 						// oidc
 						nil,
 						nil,
@@ -833,6 +843,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 						nil,
 						nil,
 						nil,
+						nil,
 						// oidc
 						nil,
 						nil,
@@ -957,6 +968,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 							nil,
 							nil,
 							nil,
+							nil,
 							// oidc
 							nil,
 							nil,
@@ -1079,6 +1091,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 							nil,
 							nil,
 							nil,
+							nil,
 							// oidc
 							nil,
 							nil,
@@ -1176,6 +1189,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 							nil,
 							nil,
 							nil,
+							nil,
 							// oidc
 							nil,
 							nil,
@@ -1239,6 +1253,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 							nil,
 							nil,
 							nil,
+							nil,
 							// oidc
 							nil,
 							nil,
@@ -1302,6 +1317,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 							"token",
 							"user",
 							database.StringArray{"profile"},
+							"id-attribute",
 							// oidc
 							nil,
 							nil,
@@ -1365,6 +1381,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 							nil,
 							nil,
 							nil,
+							nil,
 							// oidc
 							"idp-id-oidc",
 							"issuer",
@@ -1428,6 +1445,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 							nil,
 							nil,
 							nil,
+							nil,
 							// oidc
 							nil,
 							nil,
@@ -1561,6 +1579,7 @@ func Test_IDPTemplateTemplatesPrepares(t *testing.T) {
 							TokenEndpoint:         "token",
 							UserEndpoint:          "user",
 							Scopes:                []string{"profile"},
+							IDAttribute:           "id-attribute",
 						},
 					},
 					{

internal/query/projection/idp_login_policy_link.go

@@ -81,6 +81,10 @@ func (p *idpLoginPolicyLinkProjection) reducers() []handler.AggregateReducer {
 					Event:  org.IDPConfigRemovedEventType,
 					Reduce: p.reduceIDPConfigRemoved,
 				},
+				{
+					Event:  org.IDPRemovedEventType,
+					Reduce: p.reduceIDPRemoved,
+				},
 				{
 					Event:  org.OrgRemovedEventType,
 					Reduce: p.reduceOwnerRemoved,
@@ -106,6 +110,10 @@ func (p *idpLoginPolicyLinkProjection) reducers() []handler.AggregateReducer {
 					Event:  instance.IDPConfigRemovedEventType,
 					Reduce: p.reduceIDPConfigRemoved,
 				},
+				{
+					Event:  instance.IDPRemovedEventType,
+					Reduce: p.reduceIDPRemoved,
+				},
 				{
 					Event:  instance.InstanceRemovedEventType,
 					Reduce: reduceInstanceRemovedHelper(IDPUserLinkInstanceIDCol),
@@ -209,6 +217,27 @@ func (p *idpLoginPolicyLinkProjection) reduceIDPConfigRemoved(event eventstore.E
 	), nil
 }
 
+func (p *idpLoginPolicyLinkProjection) reduceIDPRemoved(event eventstore.Event) (*handler.Statement, error) {
+	var idpID string
+
+	switch e := event.(type) {
+	case *org.IDPRemovedEvent:
+		idpID = e.ID
+	case *instance.IDPRemovedEvent:
+		idpID = e.ID
+	default:
+		return nil, errors.ThrowInvalidArgumentf(nil, "HANDL-SFED3", "reduce.wrong.event.type %v", []eventstore.EventType{org.IDPRemovedEventType, instance.IDPRemovedEventType})
+	}
+
+	return crdb.NewDeleteStatement(event,
+		[]handler.Condition{
+			handler.NewCond(IDPLoginPolicyLinkIDPIDCol, idpID),
+			handler.NewCond(IDPLoginPolicyLinkResourceOwnerCol, event.Aggregate().ResourceOwner),
+			handler.NewCond(IDPLoginPolicyLinkInstanceIDCol, event.Aggregate().InstanceID),
+		},
+	), nil
+}
+
 func (p *idpLoginPolicyLinkProjection) reducePolicyRemoved(event eventstore.Event) (*handler.Statement, error) {
 	e, ok := event.(*org.LoginPolicyRemovedEvent)
 	if !ok {

internal/query/projection/idp_login_policy_link_test.go

@@ -331,6 +331,66 @@ func TestIDPLoginPolicyLinkProjection_reduces(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "org IDPRemovedEvent",
+			args: args{
+				event: getEvent(testEvent(
+					repository.EventType(org.IDPRemovedEventType),
+					org.AggregateType,
+					[]byte(`{
+						"id": "id"
+					}`),
+				), org.IDPRemovedEventMapper),
+			},
+			reduce: (&idpLoginPolicyLinkProjection{}).reduceIDPRemoved,
+			want: wantReduce{
+				aggregateType:    org.AggregateType,
+				sequence:         15,
+				previousSequence: 10,
+				executer: &testExecuter{
+					executions: []execution{
+						{
+							expectedStmt: "DELETE FROM projections.idp_login_policy_links4 WHERE (idp_id = $1) AND (resource_owner = $2) AND (instance_id = $3)",
+							expectedArgs: []interface{}{
+								"id",
+								"ro-id",
+								"instance-id",
+							},
+						},
+					},
+				},
+			},
+		},
+		{
+			name: "iam IDPRemovedEvent",
+			args: args{
+				event: getEvent(testEvent(
+					repository.EventType(instance.IDPRemovedEventType),
+					instance.AggregateType,
+					[]byte(`{
+						"id": "id"
+					}`),
+				), instance.IDPRemovedEventMapper),
+			},
+			reduce: (&idpLoginPolicyLinkProjection{}).reduceIDPRemoved,
+			want: wantReduce{
+				aggregateType:    instance.AggregateType,
+				sequence:         15,
+				previousSequence: 10,
+				executer: &testExecuter{
+					executions: []execution{
+						{
+							expectedStmt: "DELETE FROM projections.idp_login_policy_links4 WHERE (idp_id = $1) AND (resource_owner = $2) AND (instance_id = $3)",
+							expectedArgs: []interface{}{
+								"id",
+								"ro-id",
+								"instance-id",
+							},
+						},
+					},
+				},
+			},
+		},
 		{
 			name:   "org.reduceOwnerRemoved",
 			reduce: (&idpLoginPolicyLinkProjection{}).reduceOwnerRemoved,

internal/query/projection/idp_template.go

@@ -24,7 +24,7 @@ const (
 	IDPTemplateGoogleTable = IDPTemplateTable + "_" + IDPTemplateGoogleSuffix
 	IDPTemplateLDAPTable   = IDPTemplateTable + "_" + IDPTemplateLDAPSuffix
 
-	IDPTemplateOAuthSuffix  = "oauth"
+	IDPTemplateOAuthSuffix  = "oauth2"
 	IDPTemplateOIDCSuffix   = "oidc"
 	IDPTemplateJWTSuffix    = "jwt"
 	IDPTemplateGoogleSuffix = "google"
@@ -54,6 +54,7 @@ const (
 	OAuthTokenEndpointCol         = "token_endpoint"
 	OAuthUserEndpointCol          = "user_endpoint"
 	OAuthScopesCol                = "scopes"
+	OAuthIDAttributeCol           = "id_attribute"
 
 	OIDCIDCol           = "idp_id"
 	OIDCInstanceIDCol   = "instance_id"
@@ -139,6 +140,7 @@ func newIDPTemplateProjection(ctx context.Context, config crdb.StatementHandlerC
 			crdb.NewColumn(OAuthTokenEndpointCol, crdb.ColumnTypeText),
 			crdb.NewColumn(OAuthUserEndpointCol, crdb.ColumnTypeText),
 			crdb.NewColumn(OAuthScopesCol, crdb.ColumnTypeTextArray, crdb.Nullable()),
+			crdb.NewColumn(OAuthIDAttributeCol, crdb.ColumnTypeText),
 		},
 			crdb.NewPrimaryKey(OAuthInstanceIDCol, OAuthIDCol),
 			IDPTemplateOAuthSuffix,
@@ -417,6 +419,7 @@ func (p *idpTemplateProjection) reduceOAuthIDPAdded(event eventstore.Event) (*ha
 				handler.NewCol(OAuthTokenEndpointCol, idpEvent.TokenEndpoint),
 				handler.NewCol(OAuthUserEndpointCol, idpEvent.UserEndpoint),
 				handler.NewCol(OAuthScopesCol, database.StringArray(idpEvent.Scopes)),
+				handler.NewCol(OAuthIDAttributeCol, idpEvent.IDAttribute),
 			},
 			crdb.WithTableSuffix(IDPTemplateOAuthSuffix),
 		),
@@ -1176,6 +1179,9 @@ func reduceOAuthIDPChangedColumns(idpEvent idp.OAuthIDPChangedEvent) []handler.C
 	if idpEvent.Scopes != nil {
 		oauthCols = append(oauthCols, handler.NewCol(OAuthScopesCol, database.StringArray(idpEvent.Scopes)))
 	}
+	if idpEvent.IDAttribute != nil {
+		oauthCols = append(oauthCols, handler.NewCol(OAuthIDAttributeCol, *idpEvent.IDAttribute))
+	}
 	return oauthCols
 }
 

internal/query/projection/idp_template_test.go

@@ -154,6 +154,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 	"tokenEndpoint": "token",
  	"userEndpoint": "user",
 	"scopes": ["profile"],
+	"idAttribute": "id-attribute",
 	"isCreationAllowed": true,
 	"isLinkingAllowed": true,
 	"isAutoCreation": true,
@@ -188,7 +189,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 							},
 						},
 						{
-							expectedStmt: "INSERT INTO projections.idp_templates2_oauth (idp_id, instance_id, client_id, client_secret, authorization_endpoint, token_endpoint, user_endpoint, scopes) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)",
+							expectedStmt: "INSERT INTO projections.idp_templates2_oauth2 (idp_id, instance_id, client_id, client_secret, authorization_endpoint, token_endpoint, user_endpoint, scopes, id_attribute) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)",
 							expectedArgs: []interface{}{
 								"idp-id",
 								"instance-id",
@@ -198,6 +199,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 								"token",
 								"user",
 								database.StringArray{"profile"},
+								"id-attribute",
 							},
 						},
 					},
@@ -223,6 +225,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 	"tokenEndpoint": "token",
  	"userEndpoint": "user",
 	"scopes": ["profile"],
+	"idAttribute": "id-attribute",
 	"isCreationAllowed": true,
 	"isLinkingAllowed": true,
 	"isAutoCreation": true,
@@ -257,7 +260,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 							},
 						},
 						{
-							expectedStmt: "INSERT INTO projections.idp_templates2_oauth (idp_id, instance_id, client_id, client_secret, authorization_endpoint, token_endpoint, user_endpoint, scopes) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)",
+							expectedStmt: "INSERT INTO projections.idp_templates2_oauth2 (idp_id, instance_id, client_id, client_secret, authorization_endpoint, token_endpoint, user_endpoint, scopes, id_attribute) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)",
 							expectedArgs: []interface{}{
 								"idp-id",
 								"instance-id",
@@ -267,6 +270,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 								"token",
 								"user",
 								database.StringArray{"profile"},
+								"id-attribute",
 							},
 						},
 					},
@@ -304,7 +308,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 							},
 						},
 						{
-							expectedStmt: "UPDATE projections.idp_templates2_oauth SET client_id = $1 WHERE (idp_id = $2) AND (instance_id = $3)",
+							expectedStmt: "UPDATE projections.idp_templates2_oauth2 SET client_id = $1 WHERE (idp_id = $2) AND (instance_id = $3)",
 							expectedArgs: []interface{}{
 								"id",
 								"idp-id",
@@ -334,6 +338,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 	"tokenEndpoint": "token",
  	"userEndpoint": "user",
 	"scopes": ["profile"],
+	"idAttribute": "id-attribute",
 	"isCreationAllowed": true,
 	"isLinkingAllowed": true,
 	"isAutoCreation": true,
@@ -363,7 +368,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 							},
 						},
 						{
-							expectedStmt: "UPDATE projections.idp_templates2_oauth SET (client_id, client_secret, authorization_endpoint, token_endpoint, user_endpoint, scopes) = ($1, $2, $3, $4, $5, $6) WHERE (idp_id = $7) AND (instance_id = $8)",
+							expectedStmt: "UPDATE projections.idp_templates2_oauth2 SET (client_id, client_secret, authorization_endpoint, token_endpoint, user_endpoint, scopes, id_attribute) = ($1, $2, $3, $4, $5, $6, $7) WHERE (idp_id = $8) AND (instance_id = $9)",
 							expectedArgs: []interface{}{
 								"client_id",
 								anyArg{},
@@ -371,6 +376,7 @@ func TestIDPTemplateProjection_reducesOAuth(t *testing.T) {
 								"token",
 								"user",
 								database.StringArray{"profile"},
+								"id-attribute",
 								"idp-id",
 								"instance-id",
 							},

internal/repository/idp/oauth.go

@@ -20,6 +20,7 @@ type OAuthIDPAddedEvent struct {
 	TokenEndpoint         string              `json:"tokenEndpoint,omitempty"`
 	UserEndpoint          string              `json:"userEndpoint,omitempty"`
 	Scopes                []string            `json:"scopes,omitempty"`
+	IDAttribute           string              `json:"idAttribute,omitempty"`
 	Options
 }
 
@@ -31,7 +32,8 @@ func NewOAuthIDPAddedEvent(
 	clientSecret *crypto.CryptoValue,
 	authorizationEndpoint,
 	tokenEndpoint,
-	userEndpoint string,
+	userEndpoint,
+	idAttribute string,
 	scopes []string,
 	options Options,
 ) *OAuthIDPAddedEvent {
@@ -45,6 +47,7 @@ func NewOAuthIDPAddedEvent(
 		TokenEndpoint:         tokenEndpoint,
 		UserEndpoint:          userEndpoint,
 		Scopes:                scopes,
+		IDAttribute:           idAttribute,
 		Options:               options,
 	}
 }
@@ -81,6 +84,7 @@ type OAuthIDPChangedEvent struct {
 	TokenEndpoint         *string             `json:"tokenEndpoint,omitempty"`
 	UserEndpoint          *string             `json:"userEndpoint,omitempty"`
 	Scopes                []string            `json:"scopes,omitempty"`
+	IDAttribute           *string             `json:"idAttribute,omitempty"`
 	OptionChanges
 }
 
@@ -151,6 +155,12 @@ func ChangeOAuthScopes(scopes []string) func(*OAuthIDPChangedEvent) {
 	}
 }
 
+func ChangeOAuthIDAttribute(idAttribute string) func(*OAuthIDPChangedEvent) {
+	return func(e *OAuthIDPChangedEvent) {
+		e.IDAttribute = &idAttribute
+	}
+}
+
 func (e *OAuthIDPChangedEvent) Data() interface{} {
 	return e
 }

internal/repository/instance/idp.go

@@ -36,7 +36,8 @@ func NewOAuthIDPAddedEvent(
 	clientSecret *crypto.CryptoValue,
 	authorizationEndpoint,
 	tokenEndpoint,
-	userEndpoint string,
+	userEndpoint,
+	idAttribute string,
 	scopes []string,
 	options idp.Options,
 ) *OAuthIDPAddedEvent {
@@ -55,6 +56,7 @@ func NewOAuthIDPAddedEvent(
 			authorizationEndpoint,
 			tokenEndpoint,
 			userEndpoint,
+			idAttribute,
 			scopes,
 			options,
 		),

internal/repository/org/idp.go

@@ -36,7 +36,8 @@ func NewOAuthIDPAddedEvent(
 	clientSecret *crypto.CryptoValue,
 	authorizationEndpoint,
 	tokenEndpoint,
-	userEndpoint string,
+	userEndpoint,
+	idAttribute string,
 	scopes []string,
 	options idp.Options,
 ) *OAuthIDPAddedEvent {
@@ -55,6 +56,7 @@ func NewOAuthIDPAddedEvent(
 			authorizationEndpoint,
 			tokenEndpoint,
 			userEndpoint,
+			idAttribute,
 			scopes,
 			options,
 		),

proto/zitadel/admin.proto

@@ -4343,7 +4343,9 @@ message AddGenericOAuthProviderRequest {
     string token_endpoint = 5 [(validate.rules).string = {min_len: 1, max_len: 200}];
     string user_endpoint = 6 [(validate.rules).string = {min_len: 1, max_len: 200}];
     repeated string scopes = 7 [(validate.rules).repeated = {max_items: 20, items: {string: {min_len: 1, max_len: 100}}}];
-    zitadel.idp.v1.Options provider_options = 8;
+    // identifying attribute of the user in the response of the user_endpoint
+    string id_attribute = 8 [(validate.rules).string = {min_len: 1, max_len: 200}];
+    zitadel.idp.v1.Options provider_options = 9;
 }
 
 message AddGenericOAuthProviderResponse {
@@ -4361,7 +4363,9 @@ message UpdateGenericOAuthProviderRequest {
     string token_endpoint = 6 [(validate.rules).string = {min_len: 1, max_len: 200}];
     string user_endpoint = 7 [(validate.rules).string = {min_len: 1, max_len: 200}];
     repeated string scopes = 8 [(validate.rules).repeated = {max_items: 20, items: {string: {min_len: 1, max_len: 100}}}];
-    zitadel.idp.v1.Options provider_options = 9;
+    // identifying attribute of the user in the response of the user_endpoint
+    string id_attribute = 9 [(validate.rules).string = {min_len: 1, max_len: 200}];
+    zitadel.idp.v1.Options provider_options = 10;
 }
 
 message UpdateGenericOAuthProviderResponse {

proto/zitadel/idp.proto

@@ -275,6 +275,7 @@ message OAuthConfig {
     string token_endpoint = 3;
     string user_endpoint = 4;
     repeated string scopes = 5;
+    string id_attribute = 6;
 }
 
 message GenericOIDCConfig {

proto/zitadel/management.proto

@@ -11017,7 +11017,9 @@ message AddGenericOAuthProviderRequest {
     string token_endpoint = 5 [(validate.rules).string = {min_len: 1, max_len: 200}];
     string user_endpoint = 6 [(validate.rules).string = {min_len: 1, max_len: 200}];
     repeated string scopes = 7 [(validate.rules).repeated = {max_items: 20, items: {string: {min_len: 1, max_len: 100}}}];
-    zitadel.idp.v1.Options provider_options = 8;
+    // identifying attribute of the user in the response of the user_endpoint
+    string id_attribute = 8 [(validate.rules).string = {min_len: 1, max_len: 200}];
+    zitadel.idp.v1.Options provider_options = 9;
 }
 
 message AddGenericOAuthProviderResponse {
@@ -11035,7 +11037,9 @@ message UpdateGenericOAuthProviderRequest {
     string token_endpoint = 6 [(validate.rules).string = {min_len: 1, max_len: 200}];
     string user_endpoint = 7 [(validate.rules).string = {min_len: 1, max_len: 200}];
     repeated string scopes = 8 [(validate.rules).repeated = {max_items: 20, items: {string: {min_len: 1, max_len: 100}}}];
-    zitadel.idp.v1.Options provider_options = 9;
+    // identifying attribute of the user in the response of the user_endpoint
+    string id_attribute = 9 [(validate.rules).string = {min_len: 1, max_len: 200}];
+    zitadel.idp.v1.Options provider_options = 10;
 }
 
 message UpdateGenericOAuthProviderResponse {