FKIE_CVE-2026-3009

Vulnerability from fkie_nvd - Published: 2026-03-05 19:16 - Updated: 2026-03-24 12:16
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Summary
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.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:3947Vendor Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:3948Vendor Advisory
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-3009Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2441867Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
redhat build_of_keycloak -
redhat build_of_keycloak 26.4
redhat build_of_keycloak 26.4.10
redhat jboss_enterprise_application_platform 8.0
redhat jboss_enterprise_application_platform_expansion_pack -
redhat single_sign-on 7.0
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.