5.5
Medium
CVE-2023-2422 A flaw was found in Keycloak
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Single Sign-On 7 | Versions not published | |
| Red Hat Single Sign-On 7.6 for RHEL 7 | Versions not published | |
| Red Hat Single Sign-On 7.6 for RHEL 8 | Versions not published | |
| Red Hat Single Sign-On 7.6 for RHEL 9 | Versions not published | |
| RHEL-8 based Middleware Containers 7.6 | earliest → < 7.6-24 | 7.6-24 |
Other CVEs of Red Hat Single Sign-On 7
The 295 CVEs of Red Hat Single Sign-On 7 →
CVE-2026-120984
Keycloak-services: keycloak-services: manage-clients to arbitrary code execution through inline javascript policy import
9.1
Critical
CVE-2026-97848
Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization
6.5
Medium
CVE-2026-97367
Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover
6.4
Medium
CVE-2026-96547
Keycloak-services: keycloak-services: dcr registration-time claim-path gap allows forging realm_access.roles
6.5
Medium