CVE-2026-3009

HIGH EPSS 25.1%
Published Mar 5, 20263mo ago · Modified Jun 17, 20261w ago
8.1 CVSS 3.1
High
Find Similar
Published Mar 5, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.1
Exploitability
2.8
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
25.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

Affected Products 6

VendorProductVersionRange
redhatbuild_of_keycloak*any
redhatbuild_of_keycloak26.4any
redhatbuild_of_keycloak26.4.10any
redhatjboss_enterprise_application_platform8.0any
redhatjboss_enterprise_application_platform_expansion_pack*any
redhatsingle_sign-on7.0any

References 4

  • access.redhat.com https://access.redhat.com/errata/RHSA-2026:3947
    Vendor Advisory
  • access.redhat.com https://access.redhat.com/errata/RHSA-2026:3948
    Vendor Advisory
  • access.redhat.com https://access.redhat.com/security/cve/CVE-2026-3009
    Vendor Advisory
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2441867
    Issue TrackingVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.