4b59cac67b
# Which Problems Are Solved
ZITADEL uses HTML for emails and renders certain information such as
usernames dynamically. That information can be entered by users or
administrators. Due to a missing output sanitization, these emails could
include malicious code.
This may potentially lead to a threat where an attacker, without
privileges, could send out altered notifications that are part of the
registration processes. An attacker could create a malicious link, where
the injected code would be rendered as part of the email.
During investigation of this issue a related issue was found and
mitigated, where on the user's detail page the username was not
sanitized and would also render HTML, giving an attacker the same
vulnerability.
While it was possible to inject HTML including javascript, the execution
of such scripts would be prevented by most email clients and the Content
Security Policy in Console UI.
# How the Problems Are Solved
- All arguments used for email are sanitized (`html.EscapeString`)
- The email text no longer `html.UnescapeString` (HTML in custom text is
still possible)
- Console no longer uses `[innerHtml]` to render the username
# Additional Changes
None
# Additional Context
- raised via email
---------
Co-authored-by: peintnermax <max@caos.ch>
(cherry picked from commit
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Are you searching for a user management tool that is quickly set up like Auth0 and open source like Keycloak?
Do you have a project that requires multi-tenant user management with self-service for your customers?
Look no further — ZITADEL is the identity infrastructure, simplified for you.
We provide you with a wide range of out-of-the-box features to accelerate your project, including:
✅ Multi-tenancy with team management
✅ Secure login
✅ Self-service
✅ OpenID Connect
✅ OAuth2.x
✅ SAML2
✅ LDAP
✅ Passkeys / FIDO2
✅ OTP
and an unlimited audit trail is there for you, ready to use.
With ZITADEL, you are assured of a robust and customizable turnkey solution for all your authentication and authorization needs.
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If you want to experience a hands-free ZITADEL, you should use ZITADEL Cloud.
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Clone one of our example applications or deploy them directly to Vercel.
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Use our SDKs for your favorite language and framework.
Why choose ZITADEL
We built ZITADEL with a complex multi-tenancy architecture in mind and provide the best solution to handle B2B customers and partners. Yet it offers everything you need for a customer identity (CIAM) use case.
- API-first approach
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Features
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