{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-67327", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-07-29T13:07:21.184Z", "datePublished": "2026-08-01T12:22:17.753Z", "dateUpdated": "2026-08-01T12:22:17.753Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-01T12:22:17.753Z"}, "datePublic": "2026-06-26T00:00:00.000Z", "title": "better-auth before 1.6.22 Account Takeover via Magic-Link Email-OTP", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Authentication", "cweId": "CWE-287", "type": "CWE"}]}], "affected": [{"vendor": "better-auth", "product": "better-auth", "defaultStatus": "unaffected", "packageURL": "pkg:npm/better-auth", "versions": [{"version": "1.1.3", "status": "affected", "versionType": "semver", "lessThan": "1.6.22"}, {"version": "1.6.22", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "better-auth", "product": "better-auth", "defaultStatus": "unaffected", "packageURL": "pkg:npm/better-auth", "versions": [{"version": "1.7.0-beta.0", "status": "affected", "versionType": "semver", "lessThan": "1.7.0-beta.10"}, {"version": "1.7.0-beta.10", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:better-auth:better-auth\\/oauth-provider:*:*:*:*:*:node.js:*:*", "versionStartIncluding": "1.1.3", "versionEndExcluding": "1.6.22"}, {"vulnerable": true, "criteria": "cpe:2.3:a:better-auth:better-auth\\/oauth-provider:*:*:*:*:*:node.js:*:*", "versionStartIncluding": "1.7.0", "versionEndExcluding": "1.7.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW", "baseScore": 8.3, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-qq9h-g4jm-xgf3", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-qq9h-g4jm-xgf3)"}, {"name": "VulnCheck Advisory: better-auth before 1.6.22 Account Takeover via Magic-Link Email-OTP", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/better-auth-before-account-takeover-via-magic-link-email-otp"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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