CVE-2026-114607

{
  "etk_id": "ETK-2026-2466",
  "cve_id": "CVE-2026-114607",
  "display_id": "CVE-2026-114607",
  "ghsa_id": null,
  "euvd_id": null,
  "status": "published",
  "anchor_state": "anchored",
  "title": "OAuth state and Magic Link token collision in better-auth",
  "summary": "Better Auth versions from 1.4.0-beta.18 before 1.7.7 can confuse OAuth sign-in state with Magic Link tokens in specific database-backed state configurations. An unauthenticated attacker may obtain a session for a known user or create an account treated as email-verified when Magic Link, a built-in social or Generic OAuth provider, and the affected token and state settings are enabled.",
  "mitigation": "Upgrade better-auth to version 1.7.7. Until upgrades are complete, disable the affected Magic Link or database-backed OAuth state combination where possible.",
  "vendor": "better-auth",
  "product": "better-auth",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.4.0-beta.18, < 1.7.7"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "1.7.7"
      ],
      "package_name": "better-auth",
      "purl": "pkg:npm/better-auth"
    }
  ],
  "cwes": [
    287
  ],
  "cvss_score": 9.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 15.9436665,
  "t0_at": "2026-10-22T16:47:27.480000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-22T16:47:27.480000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T16:47:27.480000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-114607"
    }
  }
}