CVE-2026-22401: Freshio WordPress Theme RCE Vulnerability

CVE-2026-22401 Overview

CVE-2026-22401 is a PHP Local File Inclusion (LFI) vulnerability affecting the Freshio WordPress theme developed by Pavothemes. 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 filesystem.

The vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), which can lead to sensitive information disclosure, configuration file exposure, and potentially remote code execution when combined with other attack vectors such as log poisoning.

Critical Impact

Attackers can exploit this Local File Inclusion vulnerability to read sensitive files from the web server, potentially exposing database credentials, configuration files, and other critical system information. Combined with file upload functionality or log poisoning techniques, this could escalate to remote code execution.

Affected Products

• Freshio WordPress Theme versions through 2.4.2
• WordPress installations using the Freshio theme by Pavothemes

Discovery Timeline

• 2026-01-22 - CVE-2026-22401 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2026-22401

Vulnerability Analysis

This Local File Inclusion vulnerability exists due to insufficient input validation in the Freshio WordPress theme. The vulnerability allows attackers to manipulate file path parameters that are subsequently used in PHP include() or require() statements without proper sanitization.

When exploited, an attacker can traverse the directory structure and include files outside the intended directory scope. This vulnerability is particularly dangerous in WordPress environments where sensitive configuration files like wp-config.php contain database credentials and authentication keys.

The impact of this vulnerability includes unauthorized access to sensitive server files, potential exposure of database credentials stored in WordPress configuration files, and the possibility of achieving code execution through techniques such as log file poisoning or inclusion of uploaded files.

Root Cause

The root cause of CVE-2026-22401 is the failure to properly validate and sanitize user-supplied input before using it in file inclusion operations. The Freshio theme does not adequately restrict which files can be included through its template loading mechanisms, allowing directory traversal sequences to escape the intended directory context.

PHP applications are particularly susceptible to this class of vulnerability when they dynamically construct file paths using user input without implementing proper allowlists or path canonicalization.

Attack Vector

The attack vector for this vulnerability involves manipulating parameters passed to the theme's file inclusion functionality. An attacker can craft malicious requests containing directory traversal sequences (such as ../) to navigate outside the theme directory and include arbitrary files from the server filesystem.

For example, an attacker might target template loading functionality by injecting path traversal sequences into parameters expected to contain template names. The vulnerability allows reading files such as /etc/passwd on Linux systems or WordPress configuration files containing database credentials.

The attack does not require authentication, making it accessible to any remote attacker who can send HTTP requests to the vulnerable WordPress installation. For detailed technical information, refer to the Patchstack vulnerability database entry.

Detection Methods for CVE-2026-22401

Indicators of Compromise

• Unusual HTTP requests containing directory traversal sequences (../) targeting theme-related endpoints
• Access log entries showing requests for sensitive file paths such as wp-config.php or /etc/passwd
• Requests with encoded traversal patterns (%2e%2e%2f or ..%252f) in URL parameters
• Unexpected file access patterns in PHP error logs indicating inclusion of files outside the theme directory

Detection Strategies

• Monitor web server access logs for path traversal patterns targeting the Freshio theme directory
• Implement Web Application Firewall (WAF) rules to block requests containing directory traversal sequences
• Deploy file integrity monitoring to detect unauthorized access to sensitive configuration files
• Review PHP error logs for failed file inclusion attempts that may indicate exploitation attempts

Monitoring Recommendations

• Enable detailed logging for all requests to WordPress theme endpoints
• Configure SIEM alerts for HTTP requests containing suspicious patterns such as ../, ..%2f, or %00
• Monitor access to sensitive files like wp-config.php for unusual read patterns
• Implement anomaly detection for requests with abnormally long URL parameters that may indicate path manipulation attempts

How to Mitigate CVE-2026-22401

Immediate Actions Required

• Update the Freshio WordPress theme to the latest patched version when available from Pavothemes
• Audit WordPress installations to identify all instances using vulnerable versions of the Freshio theme
• Implement WAF rules to block path traversal attempts targeting the vulnerable theme
• Consider temporarily deactivating the Freshio theme until a patch is available if the site is handling sensitive data

Patch Information

A patched version addressing CVE-2026-22401 is expected from Pavothemes. Site administrators should monitor the official Pavothemes release channels and the Patchstack advisory for updated version information.

Ensure automatic updates are enabled for WordPress themes, or regularly check for theme updates in the WordPress admin dashboard under Appearance → Themes → Update Available.

Workarounds

• Implement server-level restrictions using open_basedir PHP directive to limit file access scope
• Deploy a Web Application Firewall with rules specifically targeting LFI attack patterns
• Restrict file permissions on sensitive configuration files to prevent unauthorized reading
• Consider using a security plugin such as Wordfence or Sucuri that provides LFI protection

# Apache .htaccess rules to block common LFI patterns
# Add to WordPress root .htaccess file

RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./|\.\.) [NC,OR]
RewriteCond %{QUERY_STRING} (\.\.%2f|%2e%2e) [NC,OR]
RewriteCond %{QUERY_STRING} (etc/passwd|wp-config\.php) [NC]
RewriteRule .* - [F,L]

# PHP open_basedir restriction (add to php.ini or .htaccess)
# php_admin_value open_basedir /var/www/html/wordpress/