VULNERABILITY INTELLIGENCE

CVE-2026-37978

CVSS score4.9 MEDIUM
EPSS probability0.43%
CISA KEVNot currently listed
Published2026-05-19
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Description

A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID (userId) parameter. This vulnerability allows for cross-role personally identifiable information (PII) leakage, enabling unauthorized visibility into user identities and authorizations across the realm. Exploitation is possible remotely via network access to the Admin API.

Weakness classification

  • CWE-639: Authorization Bypass Through User-Controlled Key

Primary references