CVE-2026-45337

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.

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Produits concernés

• better-auth
• Better-auth better auth

Scores CVSS

Faiblesses (CWE)

• CWE-285
• CWE-345

Références

• https://github.com/better-auth/better-auth/commit/99a254a79b59d5a3f5ca2123260118cddb5beed7 Patch
• https://github.com/better-auth/better-auth/pull/9573 Issue TrackingPatch
• 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 MitigationVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories