A flaw was found in Keycloak. An improper Access Control vulnerability in Keycloak’s User-Managed Access (UMA) resourceset endpoint allows attackers with valid credentials to bypass the allowRemoteResourceManagement=false restriction. This occurs due to incomplete enforcement of access control checks on PUT operations to the resourceset endpoint. This issue enables unauthorized modification of protected resources, impacting data integrity.
{
"github_reviewed": true,
"cwe_ids": [
"CWE-284"
],
"nvd_published_at": "2026-03-23T09:16:26Z",
"github_reviewed_at": "2026-03-26T19:25:57Z",
"severity": "MODERATE"
}