CVE-2026-27997 is a Local File Inclusion (LFI) vulnerability found in the ThemeREX Maxify WordPress theme, specifically in versions up to 1.0.16. The vulnerability arises from improper control of the filename parameter used in PHP include or require statements. This flaw allows an attacker to manipulate the filename input to include arbitrary files from the server's filesystem. Such an inclusion can lead to disclosure of sensitive information, such as configuration files, credentials, or source code, and in some cases, may be leveraged to execute arbitrary PHP code if combined with other vulnerabilities or writable file locations. The vulnerability does not require authentication, increasing its risk profile, and could be exploited remotely if the vulnerable parameter is exposed via web requests. Although no public exploits are currently known, the nature of LFI vulnerabilities makes them attractive targets for attackers. The absence of a CVSS score indicates that this vulnerability is newly published and awaiting further analysis or patches. The vulnerability affects the Maxify theme, which is used by WordPress sites, a widely deployed content management system. The issue was reserved in late February 2026 and published in early March 2026, with no patch links currently available, indicating that users should monitor for updates from ThemeREX or apply temporary mitigations.

The impact of CVE-2026-27997 can be significant for organizations running WordPress sites with the Maxify theme. Successful exploitation can lead to unauthorized disclosure of sensitive files, including configuration files containing database credentials or API keys, which can compromise the confidentiality of the system. Additionally, attackers might leverage this vulnerability to execute arbitrary code if they can include files with malicious payloads, threatening system integrity and availability. This can result in website defacement, data breaches, or the site being used as a pivot point for further attacks within an organization's network. The vulnerability's remote exploitation capability without authentication broadens the attack surface, increasing the likelihood of automated scanning and exploitation attempts. Organizations in sectors relying heavily on WordPress for their web presence, such as e-commerce, media, and small to medium enterprises, may face reputational damage and financial loss if exploited. The lack of known exploits currently provides a window for proactive mitigation, but the risk remains high due to the commonality of the affected platform and theme.

To mitigate CVE-2026-27997, organizations should immediately monitor for and apply any official patches or updates released by ThemeREX for the Maxify theme. Until a patch is available, administrators should restrict access to vulnerable endpoints by implementing web application firewall (WAF) rules that block suspicious requests attempting to manipulate include parameters. Input validation should be enforced at the application level to sanitize and whitelist allowable filenames, preventing arbitrary file inclusion. Disabling PHP functions such as include(), require(), and their variants from accepting user input where possible can reduce risk. Additionally, server-side hardening measures like disabling directory listing, restricting file permissions to limit access to sensitive files, and isolating the web server environment can help contain potential exploitation. Regular security audits and monitoring for unusual file access patterns or web requests can aid in early detection of exploitation attempts. Organizations should also consider employing runtime application self-protection (RASP) solutions to detect and block exploitation in real-time.