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BDVDB
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Vulnerabilities

CVE-2026-45337 | BDVDB-2026-348605 Detail

better-authbetter-auth

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact low. Attack vector: network.

Weaknesses#

  • CWE-285 Improper Authorization
  • CWE-345 Insufficient Verification of Data Authenticity

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.