{"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":0.1863,"ingestedAt":"2026-08-02T07:18:02.307Z","slug":"CVE-2026-67327","body":"## Overview\n\nbetter-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":45.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}