{
  "cvss": 9.8,
  "datePublished": "2026-10-13T00:00:00Z",
  "dateUpdated": "2026-10-13T00:00:00Z",
  "description": "The WooCommerce Subscriptions WordPress plugin before 9.1.0 does not validate user input before unserializing it on stores with High-Performance Order Storage enabled, leading to a PHP Object Injection issue which unauthenticated users can escalate to Remote Code Execution via a gadget chain present in the bundled dependencies.",
  "dueDate": "",
  "id": "CVE-2026-18391",
  "kev_catalogs": [
    "vulncheck"
  ],
  "knownRansomwareCampaignUse": "Unknown",
  "product": "WooCommerce Subscriptions",
  "requiredAction": "Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.",
  "severity": "CRITICAL",
  "source": "vulncheck_kev",
  "title": "  Unrestricted Upload of File with Dangerous Type",
  "vendor": "WooCommerce"
}