A flaw was found in the OIDC implementation of Keycloak, specifically within the Device Authorization Grant flow. This component allows devices with limited input capabilities to obtain security tokens. The issue occurs because the flow fails to check the minimum authentication level required by a client configuration. This allows an attacker who has stolen a user's password to bypass mandatory multi-factor authentication and gain unauthorized access to the Keycloak Admin REST API.
Metrics
Affected Vendors & Products
References
History
Fri, 09 Oct 2026 09:15:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Redhat build Of Keycloak
Redhat single Sign-on |
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| Vendors & Products |
Redhat build Of Keycloak
Redhat single Sign-on |
Tue, 06 Oct 2026 13:30:00 +0000
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| Metrics |
ssvc
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Tue, 06 Oct 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
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| References |
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| Metrics |
threat_severity
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threat_severity
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Tue, 06 Oct 2026 07:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in the OIDC implementation of Keycloak, specifically within the Device Authorization Grant flow. This component allows devices with limited input capabilities to obtain security tokens. The issue occurs because the flow fails to check the minimum authentication level required by a client configuration. This allows an attacker who has stolen a user's password to bypass mandatory multi-factor authentication and gain unauthorized access to the Keycloak Admin REST API. | |
| Title | Keycloak-services: keycloak-services: device authorization grant bypasses per-client minimum.acr.value enforcement | |
| First Time appeared |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
|
| Weaknesses | CWE-287 | |
| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
|
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-10-06T07:33:32.777Z
Updated: 2026-10-06T12:44:17.153Z
Reserved: 2026-10-05T05:38:12.281Z
Link: CVE-2026-105305
Updated: 2026-10-06T12:44:13.579Z
Status : Awaiting Analysis
Published: 2026-10-06T08:16:35.697
Modified: 2026-10-06T15:09:20.387
Link: CVE-2026-105305