CVE-2026-55669
Published:July 10, 2026
Updated:July 20, 2026
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.
Affected Packages
https://github.com/zitadel/zitadel.git (GITHUB):
Affected version(s) >=v3.0.0 <v3.4.12Fix Suggestion:
Update to version v3.4.12https://github.com/zitadel/zitadel.git (GITHUB):
Affected version(s) >=v4.0.0 <v4.15.2Fix Suggestion:
Update to version v4.15.2github.com/zitadel/zitadel (GO):
Affected version(s) >=v1.80.0-v2.20.0.20250502115937-573c96d6af6a <v1.80.0-v2.20.0.20260615132747-d184e976fc79Fix Suggestion:
Update to version v1.80.0-v2.20.0.20260615132747-d184e976fc79Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Origin Validation Error
EPSS
Base Score:
0.11