Overview
In the rapidly evolving digital landscape, cybersecurity threats are a persistent concern. One such vulnerability has been identified in the Crawlomatic Multipage Scraper Post Generator plugin for WordPress, a popular content management system. This vulnerability, labeled as CVE-2025-4389, allows for arbitrary file uploads, opening potential doors for unauthenticated attackers to compromise systems.
The severity of this threat is significant, given the widespread use of WordPress and the popularity of the Crawlomatic plugin. This vulnerability puts at risk millions of websites, potentially enabling hackers to execute remote code, compromise systems, or leak sensitive data, making it a matter of urgent concern for administrators, developers, and users alike.
Vulnerability Summary
CVE ID: CVE-2025-4389
Severity: Critical (9.8 CVSS Severity Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
Crawlomatic Multipage Scraper Post Generator Plugin for WordPress | Up to and including 2.6.8.1
How the Exploit Works
The vulnerability stems from the lack of file type validation in the `crawlomatic_generate_featured_image()` function of the Crawlomatic Multipage Scraper Post Generator plugin. This oversite allows unauthenticated users to upload arbitrary files to the server where the WordPress site is hosted.
Armed with this loophole, an attacker could upload a malicious file, for instance, a PHP script, which when executed, may enable them to gain control over the system or leak sensitive data.
Conceptual Example Code
A potential exploit could involve a malicious HTTP POST request. The attacker would send a request to upload a file to the server, which, due to the lack of validation, gets accepted and saved on the server. The conceptual example code might look like this:
POST /wp-content/plugins/crawlomatic/upload.php HTTP/1.1
Host: target.example.com
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="file"; filename="malicious.php"
Content-Type: application/x-php
<?php
// Malicious PHP code here...
?>
------WebKitFormBoundary7MA4YWxkTrZu0gW--In this example, a malicious PHP file is uploaded via a multipart/form-data POST request to the vulnerable plugin’s upload endpoint. The malicious PHP file could contain code designed to compromise the system or exfiltrate data.