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4.6 Medium

CVE-2026-9799 A flaw was found in org.keycloak.authorization

Description

A flaw was found in org.keycloak.authorization. An authenticated user with a granted User-Managed Access (UMA) permission ticket for one resource can exploit this by using a specific permission request prefix to bypass per-resource access control. This allows the user to gain unauthorized access to all resources of that type within the same resource server, even if they do not have a ticket for those specific resources. This vulnerability requires the resource server to be configured in PERMISSIVE policy enforcement mode and affects typed resources with ownerManagedAccess enabled, where no explicit policy protects the resource type. The primary consequence is unauthorized information disclosure or modification of resources.

Affected products and versions

Product Affected versions Fixed in
Red Hat Build of Keycloak Versions not published
Red Hat build of Keycloak 26.6 26.6 earliest → < 26.6-8 26.6-8
Red Hat build of Keycloak 26.6.4 Versions not published
Red Hat build of Keycloak 26.4 26.4 earliest → < 26.4-19 26.4-19
Red Hat build of Keycloak 26.4.13 Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Red Hat Build of Keycloak

The 275 CVEs of Red Hat Build of Keycloak →
CVE-2026-97848 Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization 6.5 Medium CVE-2026-97367 Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover 6.4 Medium CVE-2026-96547 Keycloak-services: keycloak-services: dcr registration-time claim-path gap allows forging realm_access.roles 6.5 Medium CVE-2026-96460 Keycloak-services: keycloak-services: indefinite access token renewal via standard token exchange v2 5.4 Medium
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