CVE-2026-22418: Great Lotus Path Traversal Vulnerability

CVE-2026-22418 Overview

CVE-2026-22418 is a PHP Local File Inclusion (LFI) vulnerability affecting the Great Lotus WordPress theme by AncoraThemes. The vulnerability stems from improper control of filename parameters in PHP include/require statements, allowing attackers to include arbitrary local files on the server. This can lead to sensitive information disclosure, configuration file exposure, and potentially remote code execution when combined with other attack techniques.

Critical Impact

Attackers can exploit this vulnerability to read sensitive files from the WordPress server, potentially exposing database credentials, configuration files, and other sensitive data that could be leveraged for further attacks.

Affected Products

• AncoraThemes Great Lotus WordPress Theme versions through 1.3.1
• WordPress installations using the vulnerable Great Lotus theme
• Web servers hosting affected WordPress sites

Discovery Timeline

• 2026-03-05 - CVE CVE-2026-22418 published to NVD
• 2026-03-05 - Last updated in NVD database

Technical Details for CVE-2026-22418

Vulnerability Analysis

This vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). The Great Lotus WordPress theme fails to properly sanitize user-supplied input before using it in PHP file inclusion functions such as include(), include_once(), require(), or require_once().

When user-controlled input is passed to these PHP functions without adequate validation, an attacker can manipulate the file path to include arbitrary local files from the server's filesystem. This type of vulnerability is particularly dangerous in WordPress environments where configuration files containing database credentials (wp-config.php) and other sensitive information are stored in predictable locations.

Root Cause

The root cause of this vulnerability lies in insufficient input validation and sanitization of user-supplied parameters that control which files are included by PHP. The theme likely accepts a parameter (such as a template name or component identifier) from user input and directly incorporates it into a file path without proper filtering of directory traversal sequences like ../ or validation against an allowlist of permitted files.

Attack Vector

The attack vector involves manipulating HTTP request parameters to inject malicious file paths into the vulnerable include statement. An attacker could craft requests containing directory traversal sequences to escape the intended directory and access sensitive files elsewhere on the server.

A typical exploitation scenario would involve:

1. Identifying the vulnerable parameter that controls file inclusion
2. Crafting a request with directory traversal sequences (e.g., ../../../../wp-config.php)
3. The server processes the malicious path and includes the specified file
4. Sensitive file contents are returned in the response or processed in a way that exposes information

For additional technical details, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2026-22418

Indicators of Compromise

• HTTP requests containing directory traversal patterns (../, ..%2f, ..%252f) targeting the Great Lotus theme endpoints
• Unusual access patterns to WordPress theme files or directories
• Log entries showing attempts to access sensitive files like wp-config.php, /etc/passwd, or log files through theme parameters
• Web application firewall (WAF) alerts for path traversal attempts

Detection Strategies

• Monitor web server logs for requests containing encoded or unencoded directory traversal sequences targeting the Great Lotus theme
• Implement WAF rules to detect and block LFI attack patterns in requests to WordPress themes
• Review application logs for file access errors that may indicate failed exploitation attempts
• Deploy file integrity monitoring on sensitive configuration files to detect unauthorized access

Monitoring Recommendations

• Enable verbose logging for the WordPress installation and monitor for suspicious file inclusion patterns
• Configure SIEM alerts for repeated directory traversal attempts originating from the same source
• Monitor for unusual outbound data transfers that could indicate successful exfiltration of sensitive files
• Implement real-time monitoring of access to critical WordPress files such as wp-config.php

How to Mitigate CVE-2026-22418

Immediate Actions Required

• Update the Great Lotus theme to a patched version when available from AncoraThemes
• If no patch is available, consider temporarily deactivating the Great Lotus theme and switching to an alternative
• Implement WAF rules to block directory traversal attacks targeting WordPress themes
• Review and restrict file permissions on sensitive WordPress files to limit potential exposure
• Audit web server logs for any signs of prior exploitation attempts

Patch Information

As of the last NVD update on 2026-03-05, users should check with AncoraThemes for an updated version of the Great Lotus theme that addresses this vulnerability. Monitor the Patchstack Vulnerability Report for updates on patch availability and additional remediation guidance.

Workarounds

• Temporarily disable or remove the Great Lotus theme until a patch is available
• Implement server-level restrictions using .htaccess or web server configuration to block directory traversal patterns
• Deploy a web application firewall with rules specifically targeting LFI attacks
• Move sensitive configuration files outside the web root where possible
• Apply the principle of least privilege to the web server user account to limit file access

# Example .htaccess rule to block directory traversal attempts
RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./|\.\.) [NC,OR]
RewriteCond %{QUERY_STRING} (\.\.%2f|\.\.%252f) [NC]
RewriteRule .* - [F,L]

# Restrict access to wp-config.php
<Files wp-config.php>
    order allow,deny
    deny from all
</Files>