A flaw was found in Keycloak. The User-Managed Access (UMA) 2.0 Protection API endpoint for permission tickets fails to enforce the uma_protection role check. This allows any authenticated user with a token issued for a resource server client, even without the uma_protection role, to enumerate all permission tickets in the system. This vulnerability partial leads to information disclosure.
{
"nvd_published_at": "2026-03-26T19:17:06Z",
"severity": "MODERATE",
"github_reviewed": true,
"cwe_ids": [
"CWE-280"
],
"github_reviewed_at": "2026-03-29T15:46:10Z"
}