VULNERABILITY INTELLIGENCE

CVE-2026-45337

CVSS score7.6 HIGH
EPSS probability0.21%
CISA KEVNot currently listed
Published2026-07-15
Last modified2026-07-21
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L

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.

Weakness classification

  • security-advisories@github.com: CWE-285

Primary references