CVSS 3.1
7.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:NCVE-2023-2422
High (7.1) in redhat. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in org.keycloak:keycloak-services 21.1.2.
A flaw was found in Keycloak. A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client, therefore, access data that belongs to other clients.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
- CWE
- CWE-295
- Published
- Modified
- Record from
- the NVD, synced
Affected
- redhat:keycloak
- redhat:openshift_container_platform
- redhat:single_sign-on
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-3qh5-qqj2-c78f | Maven | org.keycloak:keycloak-services | <21.1.2 | 21.1.2 |