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8.1

Contact Form 7 Plugin Allows Unrestricted File Uploads

CVE-2026-3459
Summary

The Contact Form 7 plugin for WordPress has a security issue that allows attackers to upload any type of file on the site's server. This could potentially lead to malicious code being executed on the site. Update the plugin to the latest version (1.3.7.4 or later) to fix the issue.

Original title
The Drag and Drop Multiple File Upload - Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'dnd_upload_cf7_upload' function...
Original description
The Drag and Drop Multiple File Upload - Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'dnd_upload_cf7_upload' function in versions up to, and including, 1.3.7.3. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. This can be exploited if the form includes a multiple file upload field with ‘*’ as the accepted file type.
nvd CVSS3.1 8.1
Vulnerability type
CWE-434 Unrestricted File Upload
Published: 5 Mar 2026 · Updated: 11 Mar 2026 · First seen: 6 Mar 2026