CVE-2026-9800 Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison
Authenticated users can bypass authorization policies and access protected resources by manipulating request URLs with the access-denied page path.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-9800?
CVE-2026-9800 is a high-severity authentication bypass vulnerability in Redhat Build of Keycloak, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-1025
Which versions are affected by CVE-2026-9800?
5 open source packages ship an affected version, including org.keycloak:keycloak-policy-enforcer, keycloak and org.keycloak:keycloak-services. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.keycloak:keycloak-policy-enforcer Maven | All versions | 26.0.10 |
org.keycloak:keycloak-policy-enforcer Maven | All versions | 26.0.10 |
keycloak Bitnami | From 26.4.0 | 26.4.13, 26.7.0 |
org.keycloak:keycloak-services Maven | All versions | 26.6.4 |
org.keycloak:keycloak-services Maven | All versions | 26.6.4 |
Products include Redhat Build of Keycloak.
How do I fix CVE-2026-9800?
Upgrade org.keycloak:keycloak-policy-enforcer to 26.0.10 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-9800 being exploited?
There is no known exploitation of CVE-2026-9800 in the wild and no public exploit code.
Other vulnerabilities in Redhat Build of Keycloak
- CVE-2026-15572 Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation
- CVE-2026-3047 Keycloak SAML Broken has Authentication Bypass by Primary Weakness
- CVE-2026-15573 Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher
- CVE-2026-16102 Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers
- CVE-2026-1609 Org.keycloak/keycloak-quarkus-server: keycloak: unauthorized access via jwt authorization grant with disabled users
Sources
Also known as BIT-keycloak-2026-9800, GHSA-f5p5-6xmx-p252.