CVE-2026-109346
HIGH
NVD
CVSS Score
8.1
Severity
HIGH
Published
Oct 12, 2026
Vendor
unknown
Description
better-auth from 1.3.8-beta.3 before 1.7.0-rc.3 contains a UI misrepresentation vulnerability in the deviceAuthorization plugin because GET /device omits the requesting client_id and scope. Attackers can start a device request via /device/code, trick signed-in users into approving the code, then redeem it at /device/token for a live session token.