Description
A flaw was found in Keycloak Admin API. This vulnerability allows an administrator with limited privileges to retrieve sensitive custom attributes via the /unmanagedAttributes endpoint, bypassing User Profile visibility settings.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | — | — |
| Red Hat | Red Hat build of Keycloak 26.4.9 | — | — |
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-26.4-iamguarded-compat | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.keycloak:keycloak-services | >= 26.5.0, < 26.5.2 | 26.5.2 | GHSA-g78x-7vwx-9f58 |
| Maven | org.keycloak:keycloak-services | < 26.4.9 | 26.4.9 | GHSA-g78x-7vwx-9f58 |
Advisories 1
- WID-SEC-2026-0271 Keycloak (Admin API): Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Feb 9, 2026
References
- RHSA-2026:2365 vendor-advisory
- RHSA-2026:2366 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2025-13881 vdb-entry
- RHBZ#2418330 issue-tracking