Vulnerability Details CVE-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, either as a path segment or a query parameter, an attacker can gain unauthorized access to protected resources.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 22.0%
CVSS Severity
CVSS v3 Score 8.1
References
- 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/security/cve/CVE-2026-9800
- https://bugzilla.redhat.com/show_bug.cgi?id=2482472
- 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/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
Products affected by CVE-2026-9800
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cpe:2.3:a:redhat:build_of_keycloak:26.4
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cpe:2.3:a:redhat:build_of_keycloak:26.4.10
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cpe:2.3:a:redhat:build_of_keycloak:26.4.11
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cpe:2.3:a:redhat:build_of_keycloak:26.4.12
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cpe:2.3:a:redhat:build_of_keycloak:26.4.4
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cpe:2.3:a:redhat:build_of_keycloak:26.4.5
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cpe:2.3:a:redhat:build_of_keycloak:26.4.6
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cpe:2.3:a:redhat:build_of_keycloak:26.4.7
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cpe:2.3:a:redhat:build_of_keycloak:26.4.8
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cpe:2.3:a:redhat:build_of_keycloak:26.4.9
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cpe:2.3:a:redhat:build_of_keycloak:26.6
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cpe:2.3:a:redhat:build_of_keycloak:26.6.3
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cpe:2.3:a:redhat:build_of_keycloak:26.6.4