CVEvulnerability
CVE-2026-45337
7.6 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-15
- Last modified
- 2026-07-21
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L
- Weaknesses
- CWE-285, CWE-345
Description
Better Auth is an authentication and authorization library for TypeScript. From 1.6.0 until 1.6.11, the deviceAuthorization plugin treats any authenticated session as the owner of any pending device code because GET /device does not claim the row and POST /device/approve and POST /device/deny short-circuit when userId is unset, allowing an authenticated attacker who learns a valid user_code to bind the polling device to the attacker's account or deny the legitimate flow. This issue is fixed in version 1.6.11.
Affected configurations
• better-auth better auth (>= 1.6.0 < 1.6.11)
Related
References
- https://github.com/better-auth/better-auth/commit/99a254a79b59d5a3f5ca2123260118cddb5beed7 Patch
- https://github.com/better-auth/better-auth/pull/9573 Issue Tracking, Patch
- https://github.com/better-auth/better-auth/releases/tag/v1.6.11 Release Notes
- https://github.com/better-auth/better-auth/security/advisories/GHSA-cq3f-vc6p-68fh Mitigation, Vendor Advisory