A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client's scope mapping. This bypasses intended security controls, allowing the injected role to be projected into a user's authentication token when they access the modified client. This could lead to unauthorized privilege escalation within the Keycloak realm.
{
"github_reviewed_at": "2026-07-01T21:20:38Z",
"nvd_published_at": null,
"github_reviewed": true,
"cwe_ids": [
"CWE-266"
],
"severity": "HIGH"
}