CVE-2026-22379: Netmix Path Traversal Vulnerability

CVE-2026-22379 Overview

A Local File Inclusion (LFI) vulnerability has been identified in the AncoraThemes Netmix WordPress theme. This vulnerability stems from improper control of filename parameters used in PHP include/require statements, allowing attackers to include arbitrary local files from the server. The vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program).

Critical Impact

Successful exploitation of this vulnerability could allow unauthenticated remote attackers to read sensitive files from the web server, potentially exposing configuration files, database credentials, and other sensitive information. In some scenarios, this could be chained with other vulnerabilities to achieve remote code execution.

Affected Products

• AncoraThemes Netmix WordPress Theme versions through 1.0.10
• WordPress installations running vulnerable Netmix theme versions

Discovery Timeline

• 2026-02-20 - CVE-2026-22379 published to NVD
• 2026-02-24 - Last updated in NVD database

Technical Details for CVE-2026-22379

Vulnerability Analysis

The Netmix WordPress theme by AncoraThemes contains a PHP Local File Inclusion vulnerability that arises from insufficient validation of user-supplied input when processing file paths in PHP include or require statements. When user-controlled data is passed to these functions without proper sanitization, an attacker can manipulate the file path to include arbitrary files from the local file system.

This type of vulnerability is particularly dangerous in WordPress environments where the web server may have access to sensitive configuration files such as wp-config.php, which contains database credentials, authentication keys, and other critical security settings.

Root Cause

The root cause of this vulnerability lies in the improper sanitization and validation of filename parameters before they are used in PHP's include or require functions. The Netmix theme fails to adequately restrict the characters and path components that can be supplied by users, allowing directory traversal sequences and arbitrary file path construction.

Common vulnerable patterns include directly passing user input (such as $_GET or $_POST parameters) to include statements without filtering dangerous path components like ../ sequences, null bytes, or wrapper protocols.

Attack Vector

The attack is network-based and does not require authentication, though it does have high attack complexity. An attacker can craft malicious HTTP requests containing specially crafted file path parameters designed to traverse directories and access sensitive files outside the intended scope.

Exploitation typically involves using directory traversal sequences (e.g., ../../../../etc/passwd) to navigate from the web application's directory to sensitive system files. In WordPress environments, attackers commonly target wp-config.php for database credentials or log files that may contain additional sensitive information.

For detailed technical information about this vulnerability, see the Patchstack security advisory.

Detection Methods for CVE-2026-22379

Indicators of Compromise

• Suspicious HTTP requests containing directory traversal patterns such as ../, ..%2F, or encoded variants targeting theme files
• Web server access logs showing requests with unusual file path parameters or path traversal sequences
• Unexpected file access patterns in PHP error logs referencing system files like /etc/passwd or wp-config.php
• Anomalous read operations on sensitive configuration files by the web server process

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block path traversal patterns in request parameters
• Implement file integrity monitoring on sensitive WordPress configuration files
• Configure intrusion detection systems to alert on directory traversal attack signatures
• Monitor web server logs for suspicious requests containing encoded path separators or null byte injections

Monitoring Recommendations

• Enable verbose logging for all requests to WordPress theme directories
• Set up alerts for access attempts to files outside the web root or theme directory
• Monitor for unusual PHP error messages indicating failed file inclusion attempts
• Implement real-time log analysis to detect potential exploitation attempts

How to Mitigate CVE-2026-22379

Immediate Actions Required

• Identify all WordPress installations using the Netmix theme version 1.0.10 or earlier
• Temporarily disable or replace the vulnerable Netmix theme with a secure alternative until a patch is available
• Implement WAF rules to block directory traversal patterns targeting theme endpoints
• Review web server logs for signs of exploitation attempts

Patch Information

As of the last available information, users should check the Patchstack security advisory for updates on patch availability. Contact AncoraThemes directly for information on patched versions of the Netmix theme. Consider switching to an alternative theme if no patch is released promptly.

Workarounds

• Implement strict input validation at the web server level using ModSecurity or similar WAF solutions
• Use PHP's open_basedir directive to restrict file access to the web root directory
• Configure appropriate file system permissions to limit the web server's ability to read sensitive files
• Consider deploying a virtual patching solution through security plugins like Patchstack or Wordfence

# Example PHP open_basedir configuration in php.ini or .htaccess
# Restrict PHP file operations to WordPress directory only
php_value open_basedir /var/www/html/wordpress/:/tmp/

# Apache ModSecurity rule to block path traversal
SecRule REQUEST_URI|ARGS "@rx (\.\./|\.\.\\)" "id:1001,phase:2,deny,status:403,msg:'Path Traversal Attempt Blocked'"