CVE-2026-56664

ZITADEL’s external JWT Identity Provider validation (internal/idp/providers/jwt/session.go) did not enforce maximum token age (missing iat) in tokens, allowing arbitrarily old tokens from a trusted issuer to pass authentication. Affected: ZITADEL core platform; vulnerable code path in the JWT IdP...

Insufficient Session Expiration

Overview Affected versions of this package are vulnerable to Insufficient Session Expiration in the JWT validation process. An attacker can maintain persistent unauthorized access by presenting tokens that omit the exp and iat claims, thereby bypassing session expiration and freshness checks. Thi...