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CVE-2026-3009
HIGH8.1
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.
CVE Details
CVSS v3.1 Score8.1
SeverityHIGH
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
Published3/5/2026
Last Modified3/24/2026
Sourcenvd
Honeypot Sightings0
Affected Products
redhat:build_of_keycloakredhat:jboss_enterprise_application_platformredhat:jboss_enterprise_application_platform_expansion_packredhat:single_sign-on
Weaknesses (CWE)
CWE-863CWE-863
References
https://access.redhat.com/errata/RHSA-2026:3947(secalert@redhat.com)
https://access.redhat.com/errata/RHSA-2026:3948(secalert@redhat.com)
https://access.redhat.com/security/cve/CVE-2026-3009(secalert@redhat.com)
https://bugzilla.redhat.com/show_bug.cgi?id=2441867(secalert@redhat.com)
IOC Correlations
No correlations recorded
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