CVE-2026-1609

Published Jul 16, 2026

Last updated 2 months ago

Overview

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.
Source
secalert@redhat.com
NVD status
Analyzed
Products
build_of_keycloak

Risk scores

CVSS 3.1

Type
Primary
Base score
8.1
Impact score
5.2
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Severity
HIGH

Weaknesses

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

Social media

Hype score
Not currently trending

Configurations