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Vulnerabilities

Vulnerability · CVE-2026-9800

A flaw was found in Keycloak Policy Enforcer.

Published Jun 25, 2026 · catalog updated Oct 14, 2026 · Red Hat Red Hat build of Keycloak 26.4

Check if you run it

No confirmed exploitation is on record for CVE-2026-9800. EPSS is 0.65%. Act only if a listed version of Red Hat Red Hat build of Keycloak 26.4 is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.65%
Remediation
Advisory link
Affected products
cpe redhat/build of keycloak · vendor Red Hat Red Hat build of Keycloak 26.4 · vendor Red Hat Red Hat build of Keycloak 26.4.13 · vendor Red Hat Red Hat build of Keycloak 26.4.14

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe redhat/build of keycloakversion unspecified
  • vendor Red Hat Red Hat build of Keycloak 26.4version unspecified
  • vendor Red Hat Red Hat build of Keycloak 26.4.13version unspecified
  • vendor Red Hat Red Hat build of Keycloak 26.4.14version unspecified

How to fix CVE-2026-9800

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-9800. EPSS is 0.65%. Act only if a listed version of Red Hat Red Hat build of Keycloak 26.4 is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1025. EPSS 0.65%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 25, 2026 · NIST NVD

    Detected

    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.

  2. Oct 14, 2026 · NIST NVD

    Updated

    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.

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-9800

    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, e

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2026-9800

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-9800

    30-day exploitation probability 0.7%

    first.org
  • NIST NVDVulnerability recordCVE-2026-9800

    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, e

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.