Description
A flaw was found in org.keycloak.services. An administrator with delegated access to read group memberships and users can bypass user profile permissions by accessing the group members endpoint. This allows the administrator to view user attributes that are explicitly configured to be denied, leading to information disclosure.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | — | — |
| Red Hat | Red Hat build of Keycloak 26.4.13 | — | — |
| Red Hat | Red Hat build of Keycloak 26.6 | — | — |
| Red Hat | Red Hat build of Keycloak 26.6.3 | — | — |
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.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | keycloak-26.5 +3 | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.keycloak:keycloak-services | < 26.7.0 | 26.7.0 | GHSA-6g26-7cx5-mrrg |
Advisories 1
- WID-SEC-2026-1785 Keycloak: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen und Offenlegung von Informationen BSI CERT-Bund (WID) · Jun 25, 2026
References
- RHSA-2026:25097 vendor-advisory
- RHSA-2026:25098 vendor-advisory
- RHSA-2026:30049 vendor-advisory
- RHSA-2026:30050 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-9088 vdb-entry
- RHBZ#2480179 issue-tracking