CVE-2026-55669
ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider
CVSS Score
4.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-346 |
| Vendor | zitadel |
| Product | zitadel |
| Published | Jul 10, 2026 |
| Last Updated | Jul 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
zitadel / zitadel
>= 4.0.0-rc.1, < 4.15.2 < 3.4.12