CVE-2025-58935: Axiomthemes Lunna Path Traversal Flaw

CVE-2025-58935 Overview

CVE-2025-58935 is a Local File Inclusion (LFI) vulnerability affecting the Lunna WordPress theme developed by Axiomthemes. The vulnerability stems from improper control of filename parameters used in PHP include/require statements, allowing attackers to include arbitrary local files from the server filesystem. This can lead to exposure of sensitive configuration files, source code disclosure, and potentially remote code execution when combined with other attack techniques.

Critical Impact

Unauthenticated attackers can exploit this vulnerability remotely to read sensitive files from the server, potentially exposing database credentials, WordPress configuration secrets, and other critical system information that could lead to full site compromise.

Affected Products

• Axiomthemes Lunna WordPress Theme versions up to and including 1.15
• WordPress installations using the vulnerable Lunna theme
• All server configurations running affected theme versions

Discovery Timeline

• 2025-12-18 - CVE-2025-58935 published to NVD
• 2026-01-20 - Last updated in NVD database

Technical Details for CVE-2025-58935

Vulnerability Analysis

This vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). The Lunna WordPress theme fails to properly validate and sanitize user-controlled input before passing it to PHP's file inclusion functions. When an attacker provides a crafted path through vulnerable parameters, the application includes unintended local files, bypassing access controls and potentially exposing sensitive server-side resources.

The network-accessible nature of this vulnerability means attackers can exploit it remotely without requiring authentication or user interaction. Successful exploitation can compromise the confidentiality, integrity, and availability of the affected WordPress installation.

Root Cause

The root cause lies in insufficient input validation within the theme's file inclusion logic. PHP applications commonly use include(), include_once(), require(), or require_once() functions to dynamically load template files or components. When user-supplied input directly influences the filename parameter without proper sanitization, attackers can manipulate path values using directory traversal sequences (such as ../) to access files outside the intended directory scope.

Attack Vector

The vulnerability is exploitable over the network, requiring no authentication or user interaction. Attackers can craft malicious HTTP requests containing path traversal sequences to access sensitive files on the server. Common targets include:

• WordPress configuration file (wp-config.php) containing database credentials
• System password files (/etc/passwd)
• Server configuration files
• Application source code files

The attack typically involves manipulating URL parameters or POST data that feed into the vulnerable file inclusion function, allowing the attacker to specify arbitrary file paths.

The vulnerability allows attackers to include local files by manipulating input parameters that control PHP include statements. Exploitation typically involves submitting requests with directory traversal sequences (e.g., ../../) to escape the intended directory and access sensitive files such as wp-config.php or system configuration files. For detailed technical analysis, refer to the Patchstack Vulnerability Database Entry.

Detection Methods for CVE-2025-58935

Indicators of Compromise

• HTTP request logs showing unusual path traversal patterns (multiple ../ sequences) targeting theme files
• Access attempts to sensitive files like wp-config.php, /etc/passwd, or .htaccess through theme endpoints
• Unexpected file read operations or error messages revealing internal file paths in server logs
• Web application firewall alerts for LFI-related attack signatures

Detection Strategies

• Deploy web application firewall (WAF) rules specifically targeting path traversal patterns and LFI attempts
• Monitor HTTP request parameters for directory traversal sequences (../, ..%2f, ..%5c)
• Implement file integrity monitoring on critical WordPress and system configuration files
• Review access logs for requests containing unusual file path references in theme-related URLs

Monitoring Recommendations

• Enable verbose logging for the Lunna theme directory and WordPress uploads folder
• Configure alerting for any access attempts to wp-config.php from non-standard request paths
• Monitor for unusual PHP include/require errors in WordPress debug logs
• Implement real-time log analysis to detect rapid succession of file inclusion attempts

How to Mitigate CVE-2025-58935

Immediate Actions Required

• Update the Lunna theme to the latest patched version immediately if a patch is available
• If no patch is available, consider temporarily deactivating the Lunna theme and switching to an alternative
• Implement WAF rules to block path traversal patterns targeting theme endpoints
• Review server logs for any signs of prior exploitation attempts

Patch Information

Organizations should monitor the Axiomthemes official channels and the Patchstack vulnerability database for patch availability. As of the last NVD update, versions through 1.15 remain vulnerable. Contact the theme vendor directly for updated security releases.

Workarounds

• Implement server-side access controls to restrict PHP file inclusion to whitelisted directories only
• Configure web server rules to block requests containing directory traversal patterns
• Use PHP's open_basedir directive to restrict file access to the WordPress installation directory
• Consider implementing a virtual patching solution through a WordPress security plugin

# Apache .htaccess rule to block path traversal attempts
RewriteEngine On
RewriteCond %{QUERY_STRING} \.\./|\.\.%2f|\.\.%5c [NC,OR]
RewriteCond %{REQUEST_URI} \.\./|\.\.%2f|\.\.%5c [NC]
RewriteRule .* - [F,L]

# PHP open_basedir restriction in php.ini or .user.ini
# open_basedir = /var/www/html/wordpress/