CVE-2026-9800Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison

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.

Timeline

Scores

EPSS (exploitation in 30 days)

0.65% · top 48% of all CVEs (14 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.

Affected products

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4.13-1 – < *

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4-19 – < *

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4-19 – < *

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4.14-1 – < *

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4-22 – < *

• Red Hat · Red Hat build of Keycloak 26.4

  • unaffected 26.4-22 – < *

• Red Hat · Red Hat build of Keycloak 26.4.13

  All versions: unaffected

• Red Hat · Red Hat build of Keycloak 26.4.14

  All versions: unaffected

• Red Hat · Red Hat build of Keycloak 26.6

  • unaffected 26.6.4-2 – < *

• Red Hat · Red Hat build of Keycloak 26.6

  • unaffected 26.6-8 – < *

• Red Hat · Red Hat build of Keycloak 26.6

  • unaffected 26.6-8 – < *

• Red Hat · Red Hat build of Keycloak 26.6.4

  All versions: unaffected

• Red Hat · Red Hat build of Quarkus 3.27.4.SP2

  • unaffected 26.0.10.redhat-00001 – < *

• Red Hat · Red Hat build of Quarkus 3.33.2.SP2

  • unaffected 26.0.10.redhat-00001 – < *

• Red Hat · Red Hat build of Quarkus

  All versions: unknown

• Red Hat · Red Hat JBoss Enterprise Application Platform Expansion Pack

  All versions: unaffected

• Red Hat · Red Hat Single Sign-On 7

  All versions: unknown

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Mavenorg.keycloak:keycloak-policy-enforcerGHSA-f5p5-6xmx-p252 (opens in a new tab)
• Mavenorg.keycloak:keycloak-servicesGHSA-f5p5-6xmx-p252 (opens in a new tab)

What to do

Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2026-39471 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-f5p5-6xmx-p252 (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-9800](https://cveledger.app/badge/CVE-2026-9800.svg)](https://cveledger.app/cve/CVE-2026-9800)

Record last updated 20 Oct 2026, 04:28 UTC.