CVE-2026-3047

Name: CVE-2026-3047
Creator: NVD / NIST
Published: 2026-03-05T19:16:18.383+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2026-3047 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.46%

36.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-305

Affected Software

Vendor	Product	Versions
Redhat	Build Of Keycloak	All versions
Redhat	Build Of Keycloak	26.2
Redhat	Build Of Keycloak	26.2.14
Redhat	Build Of Keycloak	26.4
Redhat	Build Of Keycloak	26.4.10
Redhat	Keycloak	All versions

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 Tracking, Vendor Advisory

Timeline

Published: Mar 5, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-3047?

How severe is CVE-2026-3047?

CVE-2026-3047 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2026-3047?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3047?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST