GHSA-m297-3jv9-m927
Keycloak allows authentication using an Identity Provider (IdP) even after it has been disabled by an administrator
At a glance
- Published
- Updated
- CVE
- CVE-2026-3009
- Aliases
- BIT-keycloak-2026-3009
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.keycloak:keycloak-services | introduced 0, fixed 26.5.5 |
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
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |