CVE-2026-3009
Org.keycloak/keycloak-services: improper enforcement of disabled identity provider in identitybrokerservice (authentication bypass)
- State
- Published
- Severity
- 8.1 High
- Published
- Mar 5, 2026
- Updated
- Sep 14, 2026
- Reserved
- Feb 23, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | redhat |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | redhat-SADP |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4.10Red Hat | |
Red Hat JBoss Enterprise Application Platform 8Red Hat | |
Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat | |
Red Hat Single Sign-On 7Red Hat |
References
- RHSA-2026:3947vendor-advisory
- RHSA-2026:3948vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-3009vdb-entry
- RHBZ#2441867issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3009.json
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