medium4.2
CVE-2026-56665
ZITADEL: Missing Token Expiration (`exp`) Validation in JWT IdP Provider
Impact
ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL is an open source identity management platform. From 3.0.0-rc.1 through 3.4.11 and from 4.0.0-rc.1 through 4.15.1, ZITADEL's external JWT Identity Provider validation in internal/idp/providers/jwt/session.go skips expiration handling when an incoming token omits the exp claim, allowing a token from a trusted issuer to be treated as valid without an automatic expiration window. 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 | >= 4.0.0-rc.1, < 4.15.2 | 4.15.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-v77h-2w3m-94hx
- https://github.com/zitadel/zitadel/security/advisories/GHSA-v77h-2w3m-94hx
- https://nvd.nist.gov/vuln/detail/CVE-2026-56665
- https://github.com/zitadel/zitadel/commit/4925fab849d39a88674485d937b79e54318b48a8
- https://github.com/zitadel/zitadel/commit/d1c3aa84af8fcb0f33910ada30b866f4afb551ac
- https://github.com/zitadel/zitadel/releases/tag/v3.4.12
- https://github.com/zitadel/zitadel/releases/tag/v4.15.2