CVE-2026-105305
Keycloak-services: keycloak-services: device authorization grant bypasses per-client minimum.acr.value enforcement
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Vendor | red hat |
| Product | red hat build of keycloak |
| Published | Oct 6, 2026 |
Stay Ahead of the Next One
Get instant alerts for red hat red hat build of keycloak
Be the first to know when new medium vulnerabilities affecting red hat red hat build of keycloak are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Red Hat / Red Hat Build of Keycloak
All versions affected Red Hat / Red Hat Build of Keycloak
All versions affected Red Hat / Red Hat Single Sign-On 7
All versions affected References
Credits
Red Hat would like to thank Ap4sh (Samy Medjahed) and Ethicxz (Eliott Laurie) for reporting this issue.