CVE-2026-9800

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

25/06/2026

Last modified:

30/07/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 8.10 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

8.10

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:redhat:build_of_keycloak::::::::	26.4 (including)	26.4.13 (excluding)
cpe:2.3:a:redhat:build_of_keycloak::::::::	26.6 (including)	26.6.4 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-9800

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools