---
id: CVE-2026-67327
title: >-
  better-auth versions >= 1.1.3 and < 1.6.22 (and pre-release versions >=
  1.7.0-beta.0 and < 1.7.0-beta.10) are vulnerable to account takeover via
  pre-account hijacking on magic-link and email-OTP sign-in when open
  email/password registrat…
summary: >-
  better-auth versions >= 1.1.3 and < 1.6.22 (and pre-release versions >=
  1.7.0-beta.0 and < 1.7.0-beta.10) are vulnerable to account takeover via
  pre-account hijacking on magic-link and email-OTP sign-in when open
  email/password registrat…
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L'
cwe:
  - CWE-287
published: '2026-08-01'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:34:34.997'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67327'
references:
  - url: >-
      https://github.com/better-auth/better-auth/security/advisories/GHSA-qq9h-g4jm-xgf3
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/better-auth-before-account-takeover-via-magic-link-email-otp
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00264
epssPercentile: 0.18635
ingestedAt: '2026-08-02T07:18:02.307Z'
---

## Overview

better-auth versions >= 1.1.3 and < 1.6.22 (and pre-release versions >= 1.7.0-beta.0 and < 1.7.0-beta.10) are vulnerable to account takeover via pre-account hijacking on magic-link and email-OTP sign-in when open email/password registration is enabled. An attacker registers an account with the victim's email address and an attacker-chosen password; the account remains unverified. When the legitimate owner later signs in via the magic-link or email-OTP passwordless flow, the account is marked verified without removing the pre-existing password or revoking existing sessions, so the attacker's password remains valid, granting persistent access to the victim's account. Fixed in 1.6.22 and 1.7.0-beta.10.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.