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CVE PROGRAM SOURCE RECORD4.2 Medium

CVE-2026-55669

ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider

Description

ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validates a token's signature and issuer (iss) but not the audience (aud) claim, allowing a validly signed token from a trusted issuer for another relying party to be accepted by ZITADEL. This issue is fixed in versions 3.4.12 and 4.15.2.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

zitadel zitadel

  • >= 4.0.0-rc.1, < 4.15.2affected
  • < 3.4.12affected

References