CVE-2026-55669

MEDIUM

ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider

Title source: cna
STIX 2.1

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.

References (3)

Core 3
Core References

Scores

CVSS v3 4.2
EPSS 0.0011
EPSS Percentile 1.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-346
Status published
Products (2)
zitadel/zitadel < 3.4.12
zitadel/zitadel >= 4.0.0-rc.1, < 4.15.2
Published Jul 10, 2026
Tracked Since Jul 10, 2026