HIGH 8.5 NVD
CVE-2026-109346
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 re
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.
References
- https://github.com/better-auth/better-auth/security/advisories/GHSA-q84f-53jg-9ppm
- https://www.vulncheck.com/advisories/better-auth-1.3.8-beta.3-before-1.7.0-rc.3-device-aut
This high severity vulnerability with a CVSS score of 8.5 was published on 2026-10-12 via NVD.
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