CVE-2026-55669CWE-346

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

Medium · published July 10, 2026

CVSS v3.1
4.2
EPSS
0%
Percentile
4.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.2 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00155 · 4.3th percentile
Weakness
CWE-346 · Origin Validation Error
Published
2026-07-10T16:58Z
EPSS history
Timeline
  • 10 JUL 16:58Z
    ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider
    cvelistv5