CVE-2026-3047 — HIGH (8.8) — White Hats Nepal

Vulnerability 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.

CVSS Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Redhat	Build Of Keycloak	-
Redhat	Keycloak	-

Related Weaknesses (CWE)

CWE-305

References

https://access.redhat.com/errata/RHSA-2026:3925Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:3926Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:3947Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:3948Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-3047Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2441966Issue TrackingVendor Advisory

FAQ

What is CVE-2026-3047?

CVE-2026-3047 is a vulnerability with a CVSS score of 8.8 (HIGH). 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...

How severe is CVE-2026-3047?

CVE-2026-3047 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-3047?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Build Of Keycloak, Redhat Keycloak.