CVE-2026-37981
MEDIUM
NVD
CVSS Score
4.3
Severity
MEDIUM
Published
May 19, 2026
Vendor
unknown
Description
A flaw was found in Keycloak. A broken access control vulnerability in the Account Resources user lookup endpoint allows a remote authenticated user, who owns at least one User-Managed Access (UMA) resource, to enumerate and harvest personally identifiable information (PII) for all realm users. By sending crafted requests with arbitrary usernames or email values, the endpoint returns full profile objects for unrelated users. This leads to broad profile-level information disclosure.