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.
CVSS 8.1EPSS 0.498%Risk 0.85
View source- Published
- 2026-07-16 01:16:30
- Affected versions
- unknown
- Type
- Critical software
- Last modified
- 2026-08-09 15:10:59
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N