Vulnerability in Zitadel
CVE-2026-55669
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 f…
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Zitadel — versions >= 4.0.0-rc.1, < 4.15.2, < 3.4.12
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-55669?
- CVE-2026-55669 is a medium-severity vulnerability in Zitadel, classified under Origin Validation Error. CVSS score: 4.2/10. Published 2026-07-10.
- How severe is CVE-2026-55669?
- Medium severity. CVSS v3 base score is 4.2 out of 10.