CVE-2026-37981
MEDIUM EPSS 28.9%
Published May 19, 20261mo ago · Modified Jun 17, 20261w ago
4.3 CVSS 3.1
Published May 19, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
28.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-1220
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| redhat | build_of_keycloak | * | ≥26.4 – <26.4.12 |
References 4
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:19596
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:19597
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-37981
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2455326
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.