CVE-2026-37981
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 4.3
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS probability
- 0.37%
- CWE
- CWE-1220
- Published
- 2026-05-19
- Last modified
- 2026-05-20
Affected products
- Red Hat Red Hat build of Keycloak 26.4
- Red Hat Red Hat build of Keycloak 26.4
Weakness type
Related vulnerabilities
- CVE-2026-77480 — SQL Server Elevation of Privilege Vulnerability
- CVE-2026-66814 — Microsoft SQL Server Elevation of Privilege Vulnerability
- CVE-2026-69267 — Windows Connected User Experiences and Telemetry Information Disclosure Vulnerability
- CVE-2026-78216 — AshLua eval read operations can read field-policy-protected fields via aggregates
- CVE-2026-78230 — AshAi aggregate tool can read field-policy-protected fields
- CVE-2026-15431 — HP Support Assistant – Potential Escalation of Privilege
- CVE-2026-78122 — docker-socket-proxy through 0.5.0 Insufficient Access Control Granularity Exposes Container Filesystems
- CVE-2026-40145 — Control protections bypass in BeyondTrust Endpoint Privilege Management (Windows deployment) support utility