{"cve":"CVE-2026-67327","nvd":{"published":"2026-08-01T13:17:03.227","modified":"2026-09-08T20:34:34.997","status":"Deferred","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L","score":8.3},"cwes":["CWE-287"],"references":["https://github.com/better-auth/better-auth/security/advisories/GHSA-qq9h-g4jm-xgf3","https://www.vulncheck.com/advisories/better-auth-before-account-takeover-via-magic-link-email-otp"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-67327","score":0.00429,"percentile":0.37131,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qq9h-g4jm-xgf3","url":"https://osv.dev/vulnerability/GHSA-qq9h-g4jm-xgf3","summary":"Better Auth: Account takeover via pre-account hijacking on magic-link and email-OTP sign-in","modified":"2026-08-02T03:56:47.905103365Z","packages":[{"ecosystem":"npm","name":"better-auth","purl":"pkg:npm/better-auth","ranges":[">=1.1.3 <1.6.22"],"fixed":["1.6.22"]},{"ecosystem":"npm","name":"better-auth","purl":"pkg:npm/better-auth","ranges":[">=1.7.0-beta.0 <1.7.0-beta.10"],"fixed":["1.7.0-beta.10"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}