Description
A flaw was found in the Keycloak Admin REST API, which is used to manage security realms and clients. The issue occurs when the system processes requests for rotated client secrets that are stored in a secure vault. Due to improper boundary enforcement, a delegated administrator with view-only permissions can retrieve the actual resolved secret instead of the vault placeholder, leading to the exposure of sensitive credentials.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.6 | — | — |
| Red Hat | Red Hat build of Keycloak 26.6.6 | — | — |
| Red Hat | Red Hat Build of Keycloak | — | — |
| Red Hat | Red Hat Data Grid 8 | — | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | — | — |
| Red Hat | Red Hat Single Sign-On 7 | — | — |
Advisories 2
- WID-SEC-2026-2517 Keycloak: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen BSI CERT-Bund (WID) · Sep 16, 2026
- NCSC-2026-0326 Kwetsbaarheden verholpen in Keycloak NCSC-NL (Netherlands) · Aug 25, 2026
References
- RHSA-2026:56523 vendor-advisory
- RHSA-2026:56524 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-17048 vdb-entry
- RHBZ#2506743 issue-tracking