GHSA-5xcf-8m2w-ph6fHighCVSS 8.1
A flaw was found in Keycloak. When the JSON Web Token (JWT) authorization grant preview feature...
🔗 CVE IDs covered (1)
📋 Description
A flaw was found in Keycloak. When the JSON Web Token (JWT) authorization grant preview feature is enabled and a user account is disabled, Keycloak fails to validate the user’s disabled status during JWT authorization grant processing. A remote attacker with low privileges can exploit this improper access control vulnerability by presenting a valid assertion token from an external identity provider to obtain a JWT for a disabled user. This allows unauthorized access to sensitive resources.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-1609
- https://github.com/keycloak/keycloak/issues/46144
- https://access.redhat.com/security/cve/CVE-2026-1609
- https://bugzilla.redhat.com/show_bug.cgi?id=2435257
- https://github.com/keycloak/keycloak/releases/tag/26.5.3
- https://github.com/advisories/GHSA-5xcf-8m2w-ph6f