GitHub Advisoryadvisory · Maven

GHSA-f5p5-6xmx-p252 Keycloak vulnerable to authorization bypass via incorrect uri comparison

HIGH Published 2026-10-29 Modified 2026-10-29 Official page ↗
Aliases
CVE-2026-9800
Ecosystem
Maven
Packages
org.keycloak:keycloak-services, org.keycloak:keycloak-policy-enforcer
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-1025
Reviewed
2026-10-29

Affected packages

• Maven org.keycloak:keycloak-services: < 26.6.4 → fixed in 26.6.4 • Maven org.keycloak:keycloak-policy-enforcer: < 26.0.10 → fixed in 26.0.10

Description

Description 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.

Related

Alias · CVE (1)

  • CVE-2026-9800 A flaw was found in Keycloak Policy Enforcer. vulnerability

Weakness · CWE (1)

  • CWE-1025 Comparison Using Wrong Factors weakness

References