CVE-2026-55672
Published:July 10, 2026
Updated:July 21, 2026
ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's OAuth2 and OIDC CodeExchange, RefreshToken, and device token flows fail to verify that the requesting client matches the client that initiated the authorization flow, allowing intercepted grants or refresh tokens to be exchanged under a different client. 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) >=v4.0.0 <v4.15.2Fix Suggestion:
Update to version v4.15.2https://github.com/zitadel/zitadel.git (GITHUB):
Affected version(s) >=v3.0.0 <v3.4.12Fix Suggestion:
Update to version v3.4.12github.com/zitadel/zitadel (GO):
Affected version(s) >=v1.80.0-v2.20.0.20220506123705-1864fde5aaae <v1.80.0-v2.20.0.20260616131956-0973b074b488Fix Suggestion:
Update to version v1.80.0-v2.20.0.20260616131956-0973b074b488Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
EPSS
Base Score:
0.28