CVE-2026-55669
ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider
- State
- Published
- Severity
- 4.2 Medium
- Published
- Jul 10, 2026
- Updated
- Jul 10, 2026
- Reserved
- Jun 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.2 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N | GitHub_M |
Weaknesses
- CWE-346 Origin Validation Error
Affected Products
| Product | Versions |
|---|---|
zitadelzitadel |
|
References
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