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5.4 Medium

CVE-2025-14778 A flaw was found in Keycloak

Description

A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService (UMA Protection API). When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first resource in the policy's list. This allows a user (Owner A) who owns one resource (RA) to update a shared policy and modify authorization rules for other resources (e.g., RB) in that same policy, even if those other resources are owned by a different user (Owner B). This constitutes a horizontal privilege escalation.

Affected products and versions

Product Affected versions Fixed in
Red Hat Build of Keycloak Versions not published
Red Hat build of Keycloak 26.2 26.2 earliest → < 26.2-15 26.2-15
Red Hat build of Keycloak 26.2.13 Versions not published
Red Hat build of Keycloak 26.4 26.4 earliest → < 26.4-10 26.4-10
Red Hat build of Keycloak 26.4.9 Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Red Hat Build of Keycloak

The 266 CVEs of Red Hat Build of Keycloak →
CVE-2026-97847 Keycloak-services: keycloak-services: client manager can substitute sessionless token principal via hardcoded-claim mappers to obtain realm administrator authority 7.1 High CVE-2026-97175 Keycloak-services: keycloak-services: unverified idp email auto-linking enables account takeover 8.8 High CVE-2026-97174 Keycloak-services: keycloak-services: ciba sub parameter injection causes attacker authentication to issue victim tokens 6.8 Medium CVE-2026-96453 Org.keycloak/keycloak-admin-cli: keycloak-admin-cli: kcadm custom truststore accepts arbitrary self-signed certificates 8.0 High
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