Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4.12-1 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-17 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-17 before * |
| Red Hat / Red Hat build of Keycloak 26.4.12 | unaffected |
CWE
CWE-639
References
- https://access.redhat.com/errata/RHSA-2026:19596
- https://access.redhat.com/errata/RHSA-2026:19597
- https://access.redhat.com/security/cve/CVE-2026-37978
- https://bugzilla.redhat.com/show_bug.cgi?id=2455327
ADP enrichment
No English description supplied.
No references supplied.