medium4.2
CVE-2026-56664
ZITADEL: Missing Token Lifecyle Validation (`exp` and `iat`) in JWT IdP Provider
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/zitadel/zitadel | < 1.80.0-v2.20.0.20260615122908-fad02c6d9f45 | 1.80.0-v2.20.0.20260615122908-fad02c6d9f45 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-wxg7-w2v3-w38g
- https://github.com/zitadel/zitadel/security/advisories/GHSA-wxg7-w2v3-w38g
- https://github.com/zitadel/zitadel/commit/fad02c6d9f4587956f830d4536c64a9a94baa7ac
- https://github.com/zitadel/zitadel/releases/tag/v3.4.12
- https://github.com/zitadel/zitadel/releases/tag/v4.15.2
- https://nvd.nist.gov/vuln/detail/CVE-2026-56664
- https://github.com/zitadel/zitadel/commit/4925fab849d39a88674485d937b79e54318b48a8
- https://github.com/zitadel/zitadel/commit/d1c3aa84af8fcb0f33910ada30b866f4afb551ac