# CVE-2026-9800

## Summary

- **CVE ID:** CVE-2026-9800
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** CWE-1025
- **Published:** Jun 25, 2026
- **Last Modified:** Aug 6, 2026

## 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.

## Affected Products

- Red Hat — Red Hat build of Keycloak 26.6 (26.6-8)
- Red Hat — Red Hat build of Keycloak 26.6 (26.6.4-2)
- Red Hat — Red Hat build of Keycloak 26.4 (26.4.13-1)
- Red Hat — Red Hat build of Keycloak 26.4 (26.4-19)
- Red Hat — Red Hat build of Keycloak 26.4 (26.4-22)
- Red Hat — Red Hat build of Keycloak 26.4 (26.4.14-1)

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2026-9800)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2482472)
- [CNA](https://access.redhat.com/errata/RHSA-2026:30083)
- [CNA](https://access.redhat.com/errata/RHSA-2026:30084)
- [CNA](https://access.redhat.com/errata/RHSA-2026:30049)
- [CNA](https://access.redhat.com/errata/RHSA-2026:30050)
- [redhat-SADP](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9800.json)
- [CNA](https://access.redhat.com/errata/RHSA-2026:50846)
- [CNA](https://access.redhat.com/errata/RHSA-2026:50847)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.63%
- **EPSS Percentile:** 48.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._