5.4
Medium
CVE-2026-105305 Keycloak-services: keycloak-services: device authorization grant bypasses per-client minimum.acr.value enforcement
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NExploitable remotely over the network, with an ordinary account and without any user action; the impact on data or service is limited.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Build of Keycloak | Versions not published | |
| Red Hat Single Sign-On 7 | Versions not published | |
| Red Hat build of Keycloak 26.6.8 | Versions not published | |
| Red Hat build of Keycloak 26.6 26.6 | earliest → < 26.6-24 | 26.6-24 |
Other CVEs of Red Hat Build of Keycloak
The 277 CVEs of Red Hat Build of Keycloak →
CVE-2026-120984
Keycloak-services: keycloak-services: manage-clients to arbitrary code execution through inline javascript policy import
9.1
Critical
CVE-2026-9797
Keycloak: keycloak: privilege escalation via client authentication manipulation by an authenticated administrator
6.5
Medium
CVE-2026-97848
Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization
6.5
Medium
CVE-2026-97367
Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover
6.4
Medium