CVE-2026-105305 — Keycloak-services: keycloak-services: device authorization grant bypasses per-client minimum.acr.value enforcement
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 t…
Published: 2026-10-06 · CVSS: 5.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7