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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 6
https://access.redhat.com/errata/RHSA-2026:3925
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:3926
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:3947
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:3948
secalert@redhat.com
https://access.redhat.com/security/cve/CVE-2026-3047
secalert@redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2441966
secalert@redhat.com