CVE-2026-9800
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Redhat Build Of Keycloak
PublishedJun 25, 2026
First seenJun 25, 2026
Weakness typeCWE-1025CWE-1025
How to fix
Update
- redhat build_of_keycloak26.4.13 or later
- org.keycloak:keycloak-services26.6.4 or later
- org.keycloak:keycloak-policy-enforcer26.0.10 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2026:30049
- access.redhat.com/errata/RHSA-2026:30050
- access.redhat.com/errata/RHSA-2026:30083
- access.redhat.com/errata/RHSA-2026:30084
- access.redhat.com/errata/RHSA-2026:36002
- access.redhat.com/errata/RHSA-2026:36013
- access.redhat.com/errata/RHSA-2026:50846
- access.redhat.com/errata/RHSA-2026:50847
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat build_of_keycloak | 26.4 ≤ v < 26.4.13, 26.6 ≤ v ≤ 26.6.4 | 26.4.13 |
| org.keycloak:keycloak-servicesMaven | v < 26.6.4 | 26.6.4 |
| org.keycloak:keycloak-policy-enforcerMaven | v < 26.0.10 | 26.0.10 |
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