CVEvulnerability
CVE-2026-37978
4.9 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-05-19
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.9 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-639
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.
Affected configurations
• redhat build of keycloak (< 26.4.12)
Related
Weakness · CWE (1)
- CWE-639 Authorization Bypass Through User-Controlled Key weakness
References
- https://access.redhat.com/errata/RHSA-2026:19596 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19597 Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-37978 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2455327 Vendor Advisory