Description
A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client is configured as an Identity Provider (IdP)-initiated broker landing target, it can still complete the login process and establish a Single Sign-On (SSO) session. This allows a remote attacker to gain unauthorized access to other enabled clients without re-authentication, effectively bypassing security restrictions.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.2 | — | — |
| Red Hat | Red Hat build of Keycloak 26.2.14 | — | — |
| Red Hat | Red Hat build of Keycloak 26.4 | — | — |
| Red Hat | Red Hat build of Keycloak 26.4.10 | — | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.keycloak:keycloak-broker-saml | <= 1.8.1.Final | — | GHSA-8cr3-vpxx-92cx |
Advisories 1
- WID-SEC-2026-0622 Keycloak: Mehrere Schwachstellen ermöglichen Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Mar 17, 2026
References
- RHSA-2026:3925 vendor-advisory
- RHSA-2026:3926 vendor-advisory
- RHSA-2026:3947 vendor-advisory
- RHSA-2026:3948 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-3047 vdb-entry
- RHBZ#2441966 issue-tracking