Review reviewHigh

CVE-2026-3047

Red Hat Red Hat build of Keycloak 26.2, Red Hat build of Keycloak 26.2.14, Red Hat build of Keycloak 26.4

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.

CVSS: 8.8
EPSS: 0.47%
CISA KEV: Not listed
Published: 2026.03.06

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.47%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: Red Hat Red Hat build of Keycloak 26.2, Red Hat build of Keycloak 26.2.14, Red Hat build of Keycloak 26.4
Affected versions: 26.2, 26.2.14, 26.4, 26.4.10
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Red Hat Red Hat build of Keycloak 26.2, Red Hat build of Keycloak 26.2.14, Red Hat build of Keycloak 26.4 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-305