CVE-2025-14778 | BDVDB-2026-314413 Detail

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.

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History#

1. Version 12026-02-09Record published in the CVE List.
2. Version 22026-02-10Most recent update recorded in the CVE List.