CVE-2026-22392 is a security vulnerability identified in the Mikado-Themes Cortex WordPress theme, specifically related to improper control of filenames used in PHP include or require statements. This vulnerability allows an attacker to perform Remote File Inclusion (RFI) or Local File Inclusion (LFI) attacks by manipulating the filename parameter that is passed to these PHP functions. The affected versions include all Cortex releases up to and including version 1.5. The vulnerability arises because the theme does not properly validate or sanitize user-supplied input used in file inclusion, enabling an attacker to specify arbitrary files to be included and executed by the PHP interpreter. This can lead to arbitrary code execution, allowing attackers to run malicious scripts on the web server, potentially leading to full server compromise, data theft, or defacement. Although no known exploits have been reported in the wild, the vulnerability is publicly disclosed and thus poses a significant risk. The lack of a CVSS score requires an assessment based on the nature of the vulnerability, which is critical due to the ease of exploitation and the potential impact. The vulnerability affects the confidentiality, integrity, and availability of the affected systems and does not require authentication or user interaction, increasing its severity. The theme is commonly used in WordPress sites, which are widespread globally, making this a relevant threat to many organizations using this product.

The impact of CVE-2026-22392 is severe for organizations using the Mikado-Themes Cortex WordPress theme. Successful exploitation can lead to arbitrary code execution on the web server, allowing attackers to gain unauthorized access to sensitive data, modify website content, deploy malware, or pivot to internal networks. This can result in data breaches, service disruption, reputational damage, and potential regulatory penalties. Since WordPress powers a significant portion of the web, and Mikado-Themes Cortex is a popular theme, the scope of affected systems is considerable. The vulnerability does not require authentication, making it accessible to remote attackers without credentials. The ease of exploitation combined with the potential for full server compromise elevates the threat to a critical level for affected organizations. Additionally, compromised web servers can be used as launch points for further attacks, including lateral movement within corporate networks or hosting phishing pages and malware distribution.

To mitigate CVE-2026-22392, organizations should immediately update the Mikado-Themes Cortex theme to a version that addresses this vulnerability once available. If a patch is not yet released, temporary mitigations include disabling or restricting the functionality that allows file inclusion, such as disabling allow_url_include in the PHP configuration and implementing strict input validation and sanitization on any user-supplied parameters related to file paths. Web application firewalls (WAFs) can be configured to detect and block suspicious requests attempting to exploit file inclusion vulnerabilities. Additionally, organizations should conduct a thorough audit of their WordPress installations to identify and isolate vulnerable instances of the Cortex theme. Regular backups and monitoring for unusual activity on web servers are recommended to detect and respond to potential exploitation attempts. Employing the principle of least privilege for web server processes can limit the damage in case of successful exploitation. Finally, educating developers and administrators about secure coding practices and timely patch management is essential to prevent similar vulnerabilities.