CVE-2026-56664

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.

• CWE-613

• 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
• https://github.com/zitadel/zitadel/security/advisories/GHSA-wxg7-w2v3-w38g

Published

Jul 10, 2026

Last Modified

Jul 10, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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