CVE-2026-55669 — ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider
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 n…
Published: 2026-07-10 · CVSS: 4.2 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7