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.

INFO

Published Date :

Last Modified :

Source :

AFFECTED PRODUCTS

The following products are affected by CVE-2026-1609 vulnerability.

Vendors Products
Keycloak
  • Keycloak-quarkus-server
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-1609.

URL Resource
https://nvd.nist.gov/vuln/detail/CVE-2026-1609 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-1609 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact