CVE-2026-22389 identifies a Local File Inclusion (LFI) vulnerability in the Mikado-Themes Cocco WordPress theme, specifically versions up to and including 1.5.1. The vulnerability arises from improper validation and control of filenames used in PHP include or require statements. This flaw enables an attacker to manipulate the input controlling which files are included by the PHP application, potentially allowing them to include arbitrary local files on the server. Such exploitation can lead to disclosure of sensitive information (e.g., configuration files, password files), or in some cases, code execution if the attacker can upload malicious files or leverage other chained vulnerabilities. The vulnerability does not currently have a CVSS score and no known public exploits have been reported. However, the nature of PHP Remote File Inclusion (RFI) or Local File Inclusion (LFI) vulnerabilities is well understood and typically considered critical or high risk. The vulnerability affects the Mikado-Themes Cocco theme, a product used in WordPress environments, which are widely deployed globally. The issue was reserved in early 2026 and published in March 2026, indicating recent discovery. No official patches or updates are linked in the provided data, so mitigation may require manual code review or temporary workarounds until an official fix is released.

The primary impact of this vulnerability is unauthorized disclosure of sensitive files and potential remote code execution, which can compromise the confidentiality and integrity of affected systems. Attackers exploiting this flaw can read critical configuration files, such as wp-config.php, exposing database credentials and other secrets. In worst-case scenarios, if combined with other vulnerabilities or file upload capabilities, attackers may execute arbitrary PHP code, leading to full system compromise. This can result in website defacement, data theft, malware deployment, or pivoting to internal networks. The availability impact is generally limited unless attackers deliberately disrupt services. Organizations worldwide using the Mikado-Themes Cocco theme are at risk, especially those with public-facing WordPress sites. The lack of authentication requirements lowers the barrier to exploitation, increasing the threat level. The absence of known exploits suggests limited current active attacks but does not reduce the potential severity once exploit code becomes available.

Organizations should immediately assess their use of the Mikado-Themes Cocco theme and identify affected versions (<= 1.5.1). Until an official patch is released, recommended mitigations include: 1) Restricting web server permissions to limit access to sensitive files and directories, 2) Implementing Web Application Firewall (WAF) rules to detect and block suspicious include path manipulations, 3) Disabling or restricting PHP functions such as include(), require(), and file inclusion where possible or applying strict input validation and sanitization on parameters controlling file paths, 4) Monitoring logs for unusual file access patterns indicative of LFI attempts, 5) Considering temporary removal or replacement of the vulnerable theme if feasible, and 6) Keeping WordPress core and all plugins/themes updated to minimize attack surface. Once an official patch is available from Mikado-Themes, apply it promptly. Additionally, conduct security audits to detect any signs of compromise resulting from this vulnerability.