🛡️ CVE-2026-37981
🟡 CVSS 4.3 — Medium ✅ No Known Exploit CWE-1220 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE CWE-1220
Public Exploit ✅ No
Source NVD
Published 2026-05-19
Updated 2026-06-04
Modified 2026-06-03
Fix URL N/A

Affected Packages

Software From version Fixed in
build-of-keycloak 26.4 26.4.12
unknown

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