cve-2026-84434

{
  "cvss": 9.8,
  "datePublished": "2026-09-18T00:00:00Z",
  "dateUpdated": "2026-09-18T00:00:00Z",
  "description": "The Gravity Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.1.0.4 via the upload_file function. This is due to a mismatch between the field validation pipeline and the file persistence pipeline, where hidden file upload fields bypass extension validation and a rejected file's intact upload state is later passed to upload_file() without re-validation. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. Exploitation requires the targeted form to contain a File Upload field with its Visibility set to 'Hidden'; the vulnerability is reachable by unauthenticated attackers on any publicly accessible form meeting this condition.",
  "dueDate": "",
  "id": "CVE-2026-84434",
  "kev_catalogs": [
    "vulncheck"
  ],
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Gravity Forms",
  "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": "Gravity Forms"
}