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CVE-2026-67327

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 ver
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9bdeeb9537b15b2186408123ca6a391a21163a330374b0b036116d823b2bfb97
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","packageURL":"pkg:npm/better-auth","product":"better-auth","vendor":"better-auth","versions":[{"lessThan":"1.7.0-beta.10","status":"affected","version":"1.7.0-beta.0","versionType":"semver"},{"status":"unaffected","version":"1.7.0-beta.10","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/affected/1

{"defaultStatus":"unaffected","packageURL":"pkg:npm/better-auth","product":"better-auth","vendor":"better-auth","versions":[{"lessThan":"1.6.22","status":"affected","version":"1.1.3","versionType":"semver"},{"status":"unaffected","version":"1.6.22","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","packageURL":"pkg:npm/better-auth","product":"better-auth","vendor":"better-auth","versions":[{"lessThan":"1.7.0-beta.10","status":"affected","version":"1.7.0-beta.0","versionType":"semver"},{"status":"unaffected","version":"1.7.0-beta.10","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/affected/1
{"defaultStatus":"unaffected","packageURL":"pkg:npm/better-auth","product":"better-auth","vendor":"better-auth","versions":[{"lessThan":"1.6.22","status":"affected","version":"1.1.3","versionType":"semver"},{"status":"unaffected","version":"1.6.22","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"GitHub Security Advisory (GHSA-qq9h-g4jm-xgf3)","tags":["vendor-advisory"],"url":"https://github.com/better-auth/better-auth/security/advisories/GHSA-qq9h-g4jm-xgf3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/references/0
{"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"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4a5808d5929faa97c834b174f0747018446286de842a4478a13240ee0ee4351c · sha256:ea4244268b5e94b2… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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