CVE-2026-27985 is a Local File Inclusion (LFI) vulnerability found in the ThemeREX Humanum WordPress theme, affecting versions up to 1.1.4. The vulnerability stems from improper control over the filename used in PHP include or require statements, allowing an attacker to manipulate input parameters to include arbitrary files from the server's filesystem. This can lead to disclosure of sensitive information such as configuration files, source code, or credentials, and may also facilitate remote code execution if combined with other vulnerabilities or writable file locations. The issue arises because the theme does not adequately validate or sanitize user input before using it in file inclusion functions, violating secure coding practices. Although no public exploits are currently known, the vulnerability is publicly disclosed and could be targeted by attackers scanning for vulnerable WordPress themes. Exploitation typically involves sending crafted HTTP requests to endpoints that handle file inclusion logic, potentially without requiring authentication or user interaction, increasing the risk. The lack of an official patch at the time of disclosure means affected sites remain vulnerable until mitigations or updates are applied. This vulnerability is critical in environments where the Humanum theme is deployed on publicly accessible web servers, especially those hosting sensitive or business-critical applications. The absence of a CVSS score necessitates an assessment based on impact and exploitability factors.

The impact of CVE-2026-27985 is significant for organizations using the ThemeREX Humanum theme on WordPress sites. Successful exploitation can lead to unauthorized disclosure of sensitive server files, including configuration files containing database credentials or API keys, thereby compromising confidentiality. Attackers may also leverage this vulnerability to execute arbitrary code or escalate privileges, threatening system integrity and availability. This can result in website defacement, data breaches, or service disruptions, damaging organizational reputation and causing financial losses. Since the vulnerability does not require authentication or user interaction, it can be exploited remotely by unauthenticated attackers, increasing the attack surface. Organizations with public-facing websites using this theme are particularly at risk, including e-commerce, government, and enterprise sectors. The lack of patches prolongs exposure, and automated scanning tools could facilitate widespread exploitation once proof-of-concept code becomes available. Overall, the vulnerability poses a high risk to confidentiality, integrity, and availability of affected systems.

To mitigate CVE-2026-27985, organizations should immediately audit their WordPress installations to identify the use of the ThemeREX Humanum theme, particularly versions up to 1.1.4. Until an official patch is released, consider temporarily disabling or replacing the theme with a secure alternative. Implement strict input validation and sanitization on all parameters used in file inclusion functions to prevent manipulation. Employ web application firewalls (WAFs) with rules designed to detect and block suspicious file inclusion attempts and anomalous HTTP requests. Restrict PHP include paths using configuration directives such as open_basedir to limit accessible directories. Monitor web server logs for unusual access patterns indicative of exploitation attempts. Regularly back up website data and configurations to enable rapid recovery if compromise occurs. Stay informed about vendor updates and apply patches promptly once available. Additionally, conduct security assessments and penetration testing focused on file inclusion vulnerabilities to identify and remediate similar issues proactively.