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Advisories

better-auth 1.3.8-beta.3 before 1.7.0-rc.3 Device Authorization Phishing via /device

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severity
high
date
Affecting

  • better-auth >= 1.3.8-beta.3, < 1.7.0-rc.3

CWE
  • CWE-451 User Interface (UI) Misrepresentation of Critical Information
CVSS
8.5
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
XlabAITeam, liangjs
Description
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.

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