Security Advisory

CVE-2026-1609

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-16 00:26:10

Last updated 2026-07-16 15:11:51

Assigner redhat

CVSS score not scored

State PUBLISHED

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.

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