VULNERABILITY INTELLIGENCE

CVE-2026-1609

CVSS score8.1 HIGH
EPSS probability0.56%
CISA KEVNot currently listed
Published2026-07-16
Last modified2026-08-09
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Weakness classification

  • secalert@redhat.com: CWE-284
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-284

Primary references