What the vulnerability does
01Description
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.
Explanation of Vulnerability in Simple Terms
02Summary
The Drag and Drop Multiple File Upload for Contact Form 7 plugin allows unauthenticated attackers to upload files without proper validation. An attacker can upload malicious files to the server by sending a crafted request. This can lead to remote code execution if the uploaded file is executable. All versions up to 1.3.9.5 are affected.
What an attacker can do
03Attacker Capabilities
Upload malicious files to the server without authentication, potentially leading to code execution.
Potential impact on your site
04Site Impact
An attacker can upload and execute malicious code on your site, compromising all data and user accounts.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user interaction required.
Key dates
06Disclosure timeline
March 5, 2026
CVE published
April 8, 2026
Record updated
