Description

A flaw was found in Keycloak. An authenticated user with the uma_protection role can bypass User-Managed Access (UMA) policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned resource. Consequently, the attacker gains unauthorized permissions to victim-owned resources, enabling them to obtain a Requesting Party Token (RPT) and access sensitive information or perform unauthorized actions.

INFO

Published Date :

2026-04-02T12:45:01.841Z

Last Modified :

2026-04-02T16:35:04.681Z

Source :

redhat
AFFECTED PRODUCTS

The following products are affected by CVE-2026-4636 vulnerability.

Vendors Products
Redhat
  • Build Keycloak
  • Build Of Keycloak

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