{"id":"CVE-2026-109346","published":"2026-10-12T17:17:31.367","lastModified":"2026-10-16T19:18:44.867","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.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","cwes":["CWE-451"],"vendors":[],"products":[],"references":[{"url":"https://github.com/better-auth/better-auth/security/advisories/GHSA-q84f-53jg-9ppm","tags":[]},{"url":"https://www.vulncheck.com/advisories/better-auth-1.3.8-beta.3-before-1.7.0-rc.3-device-authorization-phishing-via-device","tags":[]}],"exploitRefs":[{"url":"https://github.com/better-auth/better-auth/security/advisories/GHSA-q84f-53jg-9ppm","tags":[]}],"hasPoc":true,"ai":null}