Description
A flaw was found in the Fine-Grained Admin Permissions (FGAP) v2 implementation within Keycloak's administrative services. When FGAP v2 is enabled, the system fails to properly filter child groups based on the caller's specific permissions when requested through a parent group. This allows a delegated administrator to view details of child groups they are not authorized to access directly, including group names, paths, and custom attributes.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | — | — |
| Red Hat | Red Hat build of Keycloak 26.4.14 | — | — |
| Red Hat | Red Hat build of Keycloak 26.6 | — | — |
| Red Hat | Red Hat build of Keycloak 26.6.5 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | python-keycloak | No fix yet | — |
| Ubuntu 25.10 | python-keycloak | No fix yet | — |
| Ubuntu 24.04 LTS | python-keycloak | No fix yet | — |
Advisories 1
- WID-SEC-2026-2198 Keycloak: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 30, 2026
References
- RHSA-2026:50846 vendor-advisory
- RHSA-2026:50847 vendor-advisory
- RHSA-2026:50848 vendor-advisory
- RHSA-2026:50849 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-14615 vdb-entry
- RHBZ#2496891 issue-tracking