CVE-2026-27075 is a vulnerability classified as Remote File Inclusion (RFI) found in the Mikado-Themes Belfort WordPress theme, specifically affecting versions up to and including 1.0. The vulnerability stems from improper validation and control of filenames used in PHP include or require statements within the theme's codebase. This flaw allows an attacker to supply a crafted filename parameter that the application will include and execute, potentially loading malicious remote files. Such remote file inclusion can lead to remote code execution on the affected server, allowing attackers to execute arbitrary PHP code, escalate privileges, steal sensitive data, or pivot within the network. The vulnerability does not currently have an assigned CVSS score, and no public exploits have been reported yet. However, the nature of RFI vulnerabilities typically allows attackers to exploit them without authentication and with minimal user interaction, increasing their risk profile. The Belfort theme is used in WordPress environments, which are widely deployed globally, making the attack surface significant. The vulnerability was reserved in February 2026 and published in March 2026 by Patchstack, indicating recent discovery and disclosure. No official patches or updates have been linked yet, so affected users must monitor vendor advisories closely.

The impact of CVE-2026-27075 is potentially severe for organizations using the Belfort WordPress theme. Successful exploitation can lead to remote code execution, allowing attackers to fully compromise the web server hosting the vulnerable theme. This can result in unauthorized access to sensitive data, defacement of websites, deployment of malware or ransomware, and use of the compromised server as a pivot point for further attacks within the organization's network. The vulnerability undermines the confidentiality, integrity, and availability of affected systems. Given WordPress's widespread use in businesses, e-commerce, and government websites, exploitation could disrupt critical services and damage organizational reputation. The lack of authentication requirements and ease of exploitation increase the likelihood of attacks, especially by opportunistic threat actors scanning for vulnerable Belfort theme instances. The absence of known exploits currently provides a window for proactive mitigation before widespread abuse occurs.

To mitigate CVE-2026-27075, organizations should immediately audit their WordPress installations to identify any use of the Mikado-Themes Belfort theme, particularly versions up to 1.0. If Belfort is in use, administrators should monitor Mikado-Themes and Patchstack advisories for official patches or updates addressing this vulnerability and apply them promptly once available. In the interim, consider disabling or removing the Belfort theme if it is not actively used. Web application firewalls (WAFs) should be configured to detect and block suspicious requests attempting to manipulate include or require parameters, especially those containing remote URLs or unexpected file paths. Implement strict input validation and sanitization on any user-controllable parameters related to file inclusion. Restrict PHP configurations to disable remote file inclusion (e.g., setting allow_url_include=Off in php.ini) and limit file system permissions to prevent unauthorized file execution. Regularly back up website data and maintain incident response plans to quickly recover from potential compromises. Additionally, conduct security scans and penetration tests focusing on file inclusion vulnerabilities to identify and remediate similar issues proactively.