Description
A flaw was found in Keycloak. The Keycloak guides recommend to not expose /admin path to the outside in case the installation is using a proxy. The issue occurs at least via ha-proxy, as it can be tricked to using relative/non-normalized paths to access the /admin application path relative to /realms which is expected to be exposed.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Keycloak | keycloak | < 26.4.4 | 26.4.4 |
| Red Hat | Red Hat build of Keycloak 26.4 | — | — |
| Red Hat | Red Hat build of Keycloak 26.4.4 | — | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.keycloak:keycloak-quarkus-server | < 26.4.4 | 26.4.4 | GHSA-vjr8-56p3-fmqq |
Advisories 1
- WID-SEC-2025-2429 Keycloak: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Nov 13, 2025
References
- RHSA-2025:21370 vendor-advisory
- RHSA-2025:21371 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2025-10939 vdb-entry
- RHBZ#2398025 issue-tracking
- https://github.com/keycloak/keycloak/issues/43763
- https://github.com/keycloak/keycloak/pull/43765