CVE-2025-26894 is a Local File Inclusion (LFI) vulnerability found in the 'Coming Soon, Maintenance Mode' plugin developed by Mobeen Abdullah, affecting all versions up to and including 1.1.1. The vulnerability stems from improper validation and control of filenames used in PHP include or require statements. This flaw allows an attacker to manipulate the filename parameter to include arbitrary local files from the server's filesystem. Exploiting this vulnerability can lead to disclosure of sensitive files such as configuration files, password files, or application source code. In some configurations, it may also enable remote code execution if the attacker can include files containing malicious PHP code or leverage other chained vulnerabilities. The vulnerability does not require authentication, increasing its risk profile, and can be triggered remotely via crafted HTTP requests. No CVSS score has been assigned yet, and no known exploits have been reported in the wild. The vulnerability was reserved in February 2025 and published in April 2025. The lack of a patch link indicates that a fix may not yet be publicly available, emphasizing the need for immediate mitigation steps by affected users.

The impact of CVE-2025-26894 is significant for organizations using the affected plugin on PHP-based websites. Successful exploitation can lead to unauthorized disclosure of sensitive information, including configuration files, credentials, and internal application data, potentially compromising the entire web server. In worst-case scenarios, attackers may achieve remote code execution, allowing full system compromise, data theft, or deployment of malware. This can disrupt business operations, damage reputation, and lead to regulatory penalties if sensitive customer data is exposed. Since the vulnerability requires no authentication and can be exploited remotely, it poses a high risk to publicly accessible websites. Organizations relying on this plugin without timely mitigation are vulnerable to targeted attacks, especially in industries with high-value data such as finance, healthcare, and e-commerce.

1. Immediately monitor for updates or patches from the plugin developer and apply them as soon as they become available. 2. Until a patch is released, restrict access to the plugin’s functionality by limiting access via IP whitelisting or authentication mechanisms at the web server or application level. 3. Implement strict input validation and sanitization on all parameters that control file inclusion to prevent manipulation. 4. Use web application firewalls (WAFs) to detect and block suspicious requests attempting to exploit file inclusion vulnerabilities. 5. Disable unnecessary PHP functions such as 'allow_url_include' and restrict PHP file inclusion to a safe directory using open_basedir restrictions. 6. Conduct regular security audits and code reviews of custom plugins and themes to identify similar vulnerabilities. 7. Monitor web server logs for unusual file inclusion attempts or errors that may indicate exploitation attempts. 8. Consider isolating the affected plugin in a sandboxed environment or disabling it temporarily if it is not critical to operations.