CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.1. Exploitation may require the attacker to be authenticated.
CVE
CVE-2026-4636
Severity
HIGH
CVSS
8.1
EPSS
0.35%
Original NVD 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.
Related CVEs
Other vulnerabilities affecting the same vendor(s)