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CVE-2026-80192 better-auth SSO before 1.6.27 Domain Ownership Authentication Bypass

🗓️ 25 Aug 2026 23:19:00Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

@better-auth/sso before 1.6.27 (and before 1.4.8 in the 1.4.x line and before 1.7.0-rc.5 in the 1.7 prerelease line) contains two domain-ownership flaws. When domain verification is disabled, automatic organization assignment accepts unverified pr...

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Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-80192 better-auth SSO before 1.6.27 Domain Ownership Authentication Bypass
25 Aug 202623:19
cve
euvd
EUVD
EUVD-2026-66214
25 Aug 202623:19
euvd
ptsecurity
Positive Technologies
PT-2026-81905
25 Aug 202600:00
ptsecurity
[
  {
    "vendor": "better-auth",
    "product": "sso",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:npm/better-auth/sso",
    "versions": [
      {
        "version": "1.4.8-beta.1",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "1.4.8"
      },
      {
        "version": "1.4.8",
        "status": "unaffected",
        "versionType": "semver"
      }
    ]
  },
  {
    "vendor": "better-auth",
    "product": "sso",
    "defaultStatus": "affected",
    "packageURL": "pkg:npm/better-auth/sso",
    "versions": [
      {
        "version": "0",
        "status": "unaffected",
        "versionType": "semver",
        "lessThan": "1.4.9"
      }
    ]
  },
  {
    "vendor": "better-auth",
    "product": "sso",
    "defaultStatus": "affected",
    "packageURL": "pkg:npm/better-auth/sso",
    "versions": [
      {
        "version": "0",
        "status": "unaffected",
        "versionType": "semver",
        "lessThan": "1.7.0-beta.0"
      }
    ]
  }
]

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25 Aug 2026 23:19Current
CVSS 3.18.1
CVSS 48.6
3