high8.1
CVE-2026-9800
Keycloak vulnerable to authorization bypass via incorrect uri comparison
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-services | < 26.6.4 | 26.6.4 |
| maven | org.keycloak:keycloak-policy-enforcer | < 26.0.10 | 26.0.10 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | Build Of Keycloak | from 26.4 before 26.4.13 from 26.6 through 26.6.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-f5p5-6xmx-p252
- https://github.com/keycloak/keycloak/security/advisories/GHSA-f5p5-6xmx-p252
- https://nvd.nist.gov/vuln/detail/CVE-2026-9800
- https://access.redhat.com/errata/RHSA-2026:30049
- https://access.redhat.com/errata/RHSA-2026:30050
- https://access.redhat.com/errata/RHSA-2026:30083
- https://access.redhat.com/errata/RHSA-2026:30084
- https://access.redhat.com/errata/RHSA-2026:36002
- https://access.redhat.com/errata/RHSA-2026:36013
- https://access.redhat.com/errata/RHSA-2026:50846
- https://access.redhat.com/errata/RHSA-2026:50847
- https://access.redhat.com/security/cve/CVE-2026-9800
- https://bugzilla.redhat.com/show_bug.cgi?id=2482472
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9800.json