GHSA-8cr3-vpxx-92cx
Keycloak SAML Broken has Authentication Bypass by Primary Weakness
Details
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.
A fix is available at https://github.com/keycloak/keycloak/releases/tag/26.5.5.
Are you affected?
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Affected packages
0No fixed version published yet for org.keycloak:keycloak-broker-saml (maven). Pin to a known-safe version or switch to an alternative.
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-3047[ADVISORY]
- https://access.redhat.com/errata/RHSA-2026:3925[WEB]
- https://access.redhat.com/errata/RHSA-2026:3926[WEB]
- https://access.redhat.com/errata/RHSA-2026:3947[WEB]
- https://access.redhat.com/errata/RHSA-2026:3948[WEB]
- https://access.redhat.com/security/cve/CVE-2026-3047[WEB]
- https://bugzilla.redhat.com/show_bug.cgi?id=2441966[WEB]
- https://github.com/keycloak/keycloak[PACKAGE]
- https://github.com/keycloak/keycloak/releases/tag/26.5.5[WEB]