CVE-2026-55669: medium-severity vulnerability in zitadel
ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.2epss 0.2%
exploitation probability
0.2%top 96% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected products
zitadel · zitadelRelated CVEs — zitadel
In the same product, most dangerous first.
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