cve.bz

CVE-2026-55669

4.2 mediumEPSS 0.2%

Medium (4.2). EPSS 0.2% chance of exploitation in the next 30 days. Fixed in github.com/zitadel/zitadel 1.80.0-v2.20.0.20260615132747-d184e976fc79.

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.

Severity

CVSS 3.1

4.2 medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-31)
CWE
CWE-346
Published
Modified
Record from
the NVD, synced

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-g5h5-m4hm-xjrrGogithub.com/zitadel/zitadel<1.80.0-v2.20.0.20260615132747-d184e976fc791.80.0-v2.20.0.20260615132747-d184e976fc79
GO-2026-5391Gogithub.com/zitadel/zitadel<1.80.0-v2.20.0.20260615132747-d184e976fc791.80.0-v2.20.0.20260615132747-d184e976fc79

References

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