Description

A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider (IdP) even after it has been disabled by an administrator. An attacker who knows the IdP alias can reuse a previously generated login request to bypass the administrative restriction. This undermines access control enforcement and may allow unauthorized authentication through a disabled external provider.

INFO

Published Date :

2026-03-05T18:27:43.294Z

Last Modified :

2026-03-24T11:28:09.999Z

Source :

redhat
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3009 vulnerability.

Vendors Products
Redhat
  • Build Keycloak
  • Build Of Keycloak
  • Jboss Enterprise Application Platform
  • Jboss Enterprise Application Platform Expansion Pack
  • Jbosseapxp
  • Red Hat Single Sign On
  • Single Sign-on
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3009.

URL Resource
https://access.redhat.com/errata/RHSA-2026:3947 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:3948 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2026-3009 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2441867 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-3009 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-3009 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact