Vulnerability Description
ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validation in internal/idp/providers/jwt/session.go skips the maximum token age freshness check when an incoming token omits the iat claim, allowing arbitrarily old tokens from a trusted issuer to pass authentication. This issue is fixed in versions 3.4.12 and 4.15.2.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/zitadel/zitadel/commit/4925fab849d39a88674485d937b79e54318b48
- https://github.com/zitadel/zitadel/commit/d1c3aa84af8fcb0f33910ada30b866f4afb551
- https://github.com/zitadel/zitadel/releases/tag/v3.4.12
- https://github.com/zitadel/zitadel/releases/tag/v4.15.2
- https://github.com/zitadel/zitadel/security/advisories/GHSA-wxg7-w2v3-w38g
FAQ
What is CVE-2026-56664?
CVE-2026-56664 is a vulnerability with a CVSS score of 4.2 (MEDIUM). ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validation in internal/idp/providers/jwt/session.go skips the maximum token...
How severe is CVE-2026-56664?
CVE-2026-56664 has been rated MEDIUM with a CVSS base score of 4.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56664?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.