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    CVE-2026-105305

    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.

    Published:Oct 6, 2026
    Last Modified:Nov 6, 2026
    EPS:Oct 6, 2026
    EPSS Score:0.00189
    CVSS Score:5.4

    Affected Products

    Vendor
    Redhat
    Product
    Build Keycloak
    Vendor
    Redhat
    Product
    Build Of Keycloak
    Vendor
    Redhat
    Product
    Red Hat Single Sign On
    Vendor
    Redhat
    Product
    Single Sign-on

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    Related CVEs

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    CVE-2026-110932 (CVSS 7.5) — A flaw was found in the theme resource endpoint of Keycloak, an open-source identity and access management sol…
    CVE-2026-107912 (CVSS 7.7) — A flaw was found in the management interface of the Quarkus framework, specifically within the quarkus-vertx-h…
    CVE-2026-110931 (CVSS 7.5) — A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and access management.…
    CVE-2026-92855 (CVSS 7.4) — A flaw was found in the SAML identity broker component of Keycloak, which is used to delegate authentication t…
    CVE-2026-96547 (CVSS 6.5) — A flaw was found in the Dynamic Client Registration component of Keycloak, an open-source identity and access …
    CVE-2026-97367 (CVSS 6.4) — A flaw was found in the Keycloak Account REST API where it incorrectly handles session identification. A malic…
    CVE-2026-96453 (CVSS 8) — A flaw was found in the Keycloak Admin CLI kcadm tool, which is used by administrators to manage Keycloak serv…
    CVE-2026-96447 (CVSS 4.2) — A flaw was found in the TokenManager component of Keycloak, an open-source identity and access management solu…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High