CVE-2026-9800 HIGH

CVE-2026-9800: Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison

Vendor Red Hat
Product Red Hat build of Keycloak 26.4.13
Weakness CWE-1025
Published June 25, 2026
Last update July 2, 2026

CVSS base score

8.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

What the vulnerability does

01Description

A flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all authorization policies, including role, scope, and User-Managed Access (UMA) permission checks. By including the configured access-denied page path within a request URL, either as a path segment or a query parameter, an attacker can gain unauthorized access to protected resources.

Key dates

02Disclosure timeline

June 25, 2026 CVE published
July 2, 2026 Record updated