{"id":"CVE-2026-109346","summary":"better-auth 1.3.8-beta.3 before 1.7.0-rc.3 Device Authorization Phishing via /device","details":"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.","aliases":["GHSA-q84f-53jg-9ppm"],"modified":"2026-10-13T02:46:58.154725538Z","published":"2026-10-12T16:05:30.595Z","database_specific":{"cwe_ids":["CWE-451"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109346.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109346.json"},{"type":"ADVISORY","url":"https://github.com/better-auth/better-auth/security/advisories/GHSA-q84f-53jg-9ppm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109346"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/better-auth-1.3.8-beta.3-before-1.7.0-rc.3-device-authorization-phishing-via-device"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/better-auth/better-auth","events":[{"introduced":"6bb27e160c1ca2fa7aacef880d553b9bb9670e16"},{"fixed":"8bb588dde21a00c6159d0a58dd4b007b1059f596"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"1.3.8-beta.3"},{"fixed":"1.7.0-rc.3"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109346.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}