CVE-2026-27078 identifies a Local File Inclusion (LFI) vulnerability in the Mikado-Themes Emaurri WordPress theme versions up to 1.0.1. The vulnerability arises from improper validation or sanitization of user-supplied input used in PHP include or require statements. This flaw allows attackers to manipulate the filename parameter to include arbitrary local files on the server. Exploiting this vulnerability can lead to disclosure of sensitive files such as configuration files, password files, or application source code. In some cases, LFI can be chained with other vulnerabilities to achieve remote code execution. The vulnerability does not currently have a CVSS score and no public exploits have been reported. The issue affects the PHP codebase of the Emaurri theme, which is used in WordPress sites, potentially impacting any website using this theme without the patch. The vulnerability was reserved in February 2026 and published in March 2026. No official patches or updates have been linked yet, so mitigation relies on manual code review, input validation, or disabling vulnerable features. The lack of remote file inclusion limits the attacker's ability to include external malicious files, but local file inclusion remains a serious threat vector.

The impact of CVE-2026-27078 is significant for organizations running WordPress sites with the vulnerable Emaurri theme. Successful exploitation can lead to unauthorized disclosure of sensitive server files, including credentials, configuration data, and source code, compromising confidentiality. Attackers may leverage this information to further penetrate the network or escalate privileges, threatening integrity and availability. Since the vulnerability does not require authentication and can be triggered remotely via crafted HTTP requests, the attack surface is broad. This can result in website defacement, data breaches, or use of the compromised server as a pivot point for lateral movement. Organizations relying on the affected theme for business-critical websites or e-commerce platforms face reputational damage and potential regulatory penalties if sensitive customer data is exposed. The absence of known exploits currently limits immediate widespread impact, but the vulnerability's presence in popular CMS themes makes it a high-value target for attackers.

To mitigate CVE-2026-27078, organizations should first verify if their WordPress installations use the Mikado-Themes Emaurri theme version 1.0.1 or earlier. If so, immediate steps include: 1) Applying any official patches or updates from Mikado-Themes as soon as they become available. 2) If no patch exists, manually review and harden the PHP code handling include/require statements to enforce strict input validation and whitelist allowed filenames. 3) Disable or restrict access to vulnerable functionality if feasible. 4) Employ Web Application Firewalls (WAFs) with rules to detect and block suspicious requests attempting to exploit LFI patterns. 5) Monitor web server logs for unusual file inclusion attempts or error messages indicative of exploitation attempts. 6) Limit file permissions on the server to restrict access to sensitive files and directories. 7) Conduct regular security audits and vulnerability scans focused on CMS themes and plugins. These targeted actions go beyond generic advice by focusing on theme-specific code review and proactive monitoring tailored to this vulnerability.