CVE-2026-37978CWE-639

Keycloak: org.keycloak.services: keycloak: information disclosure via evaluate-scopes admin api

Medium · published May 19, 2026

CVSS v3.1
4.9
EPSS
0%
Percentile
38.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00459 · 38.8th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-05-19T10:52Z
EPSS history
Timeline
  • 19 MAY 10:52Z
    Keycloak: org.keycloak.services: keycloak: information disclosure via evaluate-scopes admin api
    cvelistv5