Is CVE-2026-37981 actively exploited?

No active exploitation of CVE-2026-37981 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-37981 be exploited remotely?

Yes. CVE-2026-37981 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-37981?

CVE-2026-37981 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-37981

CWE-1220Published: May 19, 2026· Updated: May 20, 2026

4.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:10.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-37981 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.