High 8.1Published Mar 5, 2026

CVE-2026-3009Org.keycloak/keycloak-services: improper enforcement of disabled identity provider in identitybrokerservice (authentication bypass)

Updated under an hour ago (Oct 27, 2026, 10:30 AM ET)

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It affects Red Hat build of Keycloak 26.4 and 6 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Red Hat build of Keycloak 26.4

Exploited in the last 30 days

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.

CVSS: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Modified
Record last updated: Sep 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat build of Keycloak 26.4 redhat:build_keycloak	from 26.4.10-1 not affected	CNA record
Red Hat Red Hat JBoss Enterprise Application Platform 8 redhat:jboss_enterprise_application_platform	8	CNA record
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp	Versions not stated	CNA record
Red Hat Red Hat Single Sign-On 7 redhat:red_hat_single_sign_on	7	CNA record
Red Hat Red Hat build of Keycloak 26.4 redhat:build_keycloak	from 26.4.10-1 not affected	CISA ADP
Red Hat Red Hat JBoss Enterprise Application Platform 8 redhat:jboss_enterprise_application_platform	8	CISA ADP
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp	Versions not stated	CISA ADP
Red Hat Red Hat Single Sign-On 7 redhat:red_hat_single_sign_on	7	CISA ADP
redhat build_of_keycloak redhat:build_of_keycloak	all versions; 26.4; 26.4.10	NVD
redhat jboss_enterprise_application_platform redhat:jboss_enterprise_application_platform	8.0	NVD
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References

References

https://access.redhat.com/errata/RHSA-2026:3947	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:3948	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2026-3009	vdb-entry, x-refsource-redhat, vendor-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2441867	issue-tracking, x-refsource-redhat, vendor-advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3009.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.