CVE-2026-3009

HighCVSS 8.1/10Last modified Sep 14, 2026

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-863

Affected software

No affected versions have been published.

Timeline

Published: Mar 5, 2026
Last modified: Sep 14, 2026
NVD status: Modified

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