CVE-2026-27079 is a vulnerability classified as Improper Control of Filename for Include/Require Statement in PHP programs, specifically identified in the Mikado-Themes Amfissa WordPress theme versions up to 1.1. This vulnerability allows Remote File Inclusion (RFI), where an attacker can manipulate the filename parameter used in PHP's include or require functions to load arbitrary files. This can lead to the execution of malicious code hosted on remote servers or local files on the server, depending on the configuration. The root cause is insufficient validation or sanitization of user-supplied input controlling the file path in the theme's PHP code. Exploiting this vulnerability can enable attackers to execute arbitrary PHP code, potentially leading to full site compromise, data theft, defacement, or pivoting to other internal systems. Although no known exploits are currently reported in the wild, the vulnerability is publicly disclosed and poses a significant risk to affected installations. The affected product is the Amfissa theme by Mikado-Themes, commonly used in WordPress environments. The vulnerability was reserved in February 2026 and published in March 2026, with no CVSS score assigned yet. The lack of patch links suggests that a fix may not be publicly available at the time of disclosure, increasing the urgency for mitigation.

The impact of CVE-2026-27079 is potentially severe for organizations using the Mikado-Themes Amfissa WordPress theme. Successful exploitation can lead to remote code execution, allowing attackers to take full control over the affected web server. 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 network. The vulnerability undermines the confidentiality, integrity, and availability of affected systems. Organizations relying on WordPress sites with this theme may face reputational damage, regulatory penalties if sensitive data is exposed, and operational disruptions. Since WordPress is widely used globally, the scope of affected systems could be significant, especially if the theme is popular among certain user bases. The absence of authentication requirements and the possibility of remote exploitation increase the risk profile. However, the lack of known active exploitation may provide a limited window for remediation.

To mitigate CVE-2026-27079, organizations should first check if they are using the Mikado-Themes Amfissa theme, particularly versions up to 1.1. Immediate steps include: 1) Temporarily disabling or removing the vulnerable theme until a patch is available. 2) Applying any official patches or updates released by Mikado-Themes as soon as they become available. 3) Reviewing and sanitizing all user inputs that influence file inclusion paths in custom code or plugins. 4) Implementing strict allowlists for file inclusion paths to prevent arbitrary file loading. 5) Employing Web Application Firewalls (WAFs) to detect and block suspicious requests attempting to exploit file inclusion vulnerabilities. 6) Monitoring web server logs for unusual requests that attempt to manipulate include parameters. 7) Conducting regular security audits and penetration testing focused on file inclusion and code injection vulnerabilities. 8) Educating developers and administrators about secure coding practices related to file handling in PHP. These measures go beyond generic advice by emphasizing proactive detection, input validation, and layered defenses.