CVE-2026-22370 is a vulnerability classified as improper control of filename for include/require statements in the PHP program Marveland by axiomthemes, affecting versions up to 1.3.0. This vulnerability enables Remote File Inclusion (RFI), where an attacker can manipulate the filename parameter used in PHP's include or require functions to load and execute arbitrary remote PHP code. The root cause is insufficient validation or sanitization of user-controlled input that determines the file path to be included. Exploiting this vulnerability allows attackers to execute arbitrary code remotely, potentially leading to full system compromise, data theft, or service disruption. The CVSS 3.1 base score is 8.1, indicating high severity with network attack vector, high complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. No patches or exploits are currently documented, but the vulnerability's nature makes it a critical risk for affected installations. The vulnerability primarily impacts PHP environments using the Marveland theme, commonly deployed in web servers running WordPress or similar CMS platforms.

The impact of CVE-2026-22370 is severe for organizations running the Marveland PHP theme. Successful exploitation can lead to remote code execution, allowing attackers to take full control of the affected web server. This compromises confidentiality by exposing sensitive data, integrity by allowing unauthorized code or data modification, and availability by potentially causing denial of service or server crashes. Attackers could deploy backdoors, pivot within internal networks, or exfiltrate data. Given the remote, unauthenticated nature of the exploit, the threat extends to any publicly accessible web server using the vulnerable theme. This can affect organizations of all sizes, especially those relying on PHP-based CMS platforms for their web presence. The lack of known exploits in the wild currently reduces immediate risk but does not diminish the urgency to address the vulnerability.

To mitigate CVE-2026-22370, organizations should first check for and apply any official patches or updates from axiomthemes for the Marveland product. If patches are not yet available, implement strict input validation and sanitization on all parameters used in include or require statements to ensure only safe, expected file paths are processed. Employ web application firewalls (WAFs) with rules to detect and block attempts to exploit file inclusion vulnerabilities. Disable allow_url_include in PHP configurations to prevent remote file inclusion. Restrict file permissions and isolate web server processes to limit the impact of any successful exploit. Regularly audit and monitor web server logs for suspicious activity related to file inclusion attempts. Additionally, consider using security plugins or modules that can detect and prevent RFI attacks in PHP environments.