GitHub Advisoryadvisory · Maven
GHSA-m297-3jv9-m927 Keycloak allows authentication using an Identity Provider (IdP) even after it has been disabled by an administrator
HIGH
Official page ↗
- Aliases
- CVE-2026-3009
- Ecosystem
- Maven
- Packages
- org.keycloak:keycloak-services
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-285, CWE-863
- Reviewed
- 2026-03-06
Affected packages
• Maven org.keycloak:keycloak-services: < 26.5.5 → fixed in 26.5.5
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.
Related
Alias · CVE (1)
- CVE-2026-3009 A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider… vulnerability
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-3009 advisory
- https://github.com/keycloak/keycloak/issues/46911 web
- https://github.com/keycloak/keycloak/commit/4fd5367e6cc28cfa68fb2240fc459c12b1fdbf2a web
- https://access.redhat.com/errata/RHSA-2026:3947 web
- https://access.redhat.com/errata/RHSA-2026:3948 web
- https://access.redhat.com/security/cve/CVE-2026-3009 web
- https://bugzilla.redhat.com/show_bug.cgi?id=2441867 web
- https://github.com/keycloak/keycloak package
- https://github.com/keycloak/keycloak/releases/tag/26.5.5 web