CVE-2026-3047

moderate-risk

Published 2026-03-05

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.

Do I need to act?

0.52% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.8/10 High

NETWORK / LOW complexity

Affected Products (6)

Build Of Keycloak

Keycloak

Affected Vendors

Redhat

References (6)

Vendor Advisory https://access.redhat.com/errata/RHSA-2026:3925

Vendor Advisory https://access.redhat.com/errata/RHSA-2026:3926

Vendor Advisory https://access.redhat.com/errata/RHSA-2026:3947

Vendor Advisory https://access.redhat.com/errata/RHSA-2026:3948

Vendor Advisory https://access.redhat.com/security/cve/CVE-2026-3047

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2441966

/ 100

moderate-risk

Severity 30/34 · Critical

Exploitability 2/34 · Minimal

Exposure 13/34 · Low