CVE-2026-22427: GoTravel Path Traversal Vulnerability

CVE-2026-22427 Overview

CVE-2026-22427 is a PHP Local File Inclusion (LFI) vulnerability affecting the GoTravel WordPress theme developed by Mikado-Themes. 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 vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), which describes conditions where user-controlled input can influence file inclusion operations without proper validation or sanitization.

Critical Impact

Attackers can exploit this Local File Inclusion vulnerability to read sensitive server files, potentially exposing configuration data, credentials, and in some cases achieving remote code execution through log poisoning or other LFI-to-RCE techniques.

Affected Products

• Mikado-Themes GoTravel WordPress Theme versions through 2.1
• WordPress installations using the vulnerable GoTravel theme
• Web servers hosting affected WordPress sites

Discovery Timeline

• 2026-03-05 - CVE-2026-22427 published to NVD
• 2026-03-05 - Last updated in NVD database

Technical Details for CVE-2026-22427

Vulnerability Analysis

The GoTravel WordPress theme contains an Improper Control of Filename for Include/Require Statement vulnerability that allows PHP Local File Inclusion attacks. This weakness occurs when the application dynamically includes PHP files based on user-supplied input without adequately validating or sanitizing the filename parameter.

In vulnerable configurations, an attacker can manipulate include parameters to traverse directories and include arbitrary files from the local filesystem. While the vulnerability title mentions "PHP Remote File Inclusion," the actual impact as documented is Local File Inclusion, meaning attackers are limited to including files already present on the target server rather than remote resources.

The vulnerability affects all versions of GoTravel from the initial release through version 2.1. WordPress themes often contain template loading mechanisms and dynamic file inclusion functionality that, when improperly implemented, can lead to this class of vulnerability.

Root Cause

The root cause of this vulnerability lies in insufficient input validation within the GoTravel theme's file inclusion logic. The theme fails to properly sanitize or restrict user-controllable input that is subsequently used in PHP include(), require(), include_once(), or require_once() statements.

Key contributing factors include:

• Lack of whitelist validation for allowed file paths
• Insufficient filtering of directory traversal sequences (e.g., ../)
• Missing verification that requested files reside within expected directories
• Absence of proper input sanitization before file inclusion operations

Attack Vector

An attacker can exploit this vulnerability by crafting malicious requests that manipulate file inclusion parameters. The attack typically involves:

1. Identifying vulnerable endpoints in the GoTravel theme that accept file path parameters
2. Injecting directory traversal sequences to escape the intended directory context
3. Specifying paths to sensitive local files such as /etc/passwd, wp-config.php, or server logs
4. Potentially escalating to remote code execution through log poisoning techniques where attacker-controlled data is written to log files and then included

The exploitation does not require authentication in typical scenarios, making it accessible to unauthenticated remote attackers. Successful exploitation can lead to information disclosure, credential theft, and potentially full server compromise.

Detection Methods for CVE-2026-22427

Indicators of Compromise

• Unusual HTTP requests containing directory traversal sequences (../, ..%2f, %2e%2e/) targeting the GoTravel theme endpoints
• Web server access logs showing requests attempting to access sensitive files like /etc/passwd or wp-config.php
• Error logs indicating failed file inclusion attempts or PHP warnings related to file access
• Unexpected file access patterns to system configuration files or WordPress core files

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block directory traversal patterns in request parameters
• Monitor web server access logs for requests containing path traversal sequences targeting WordPress theme directories
• Deploy file integrity monitoring (FIM) on critical WordPress configuration files to detect unauthorized access or modifications
• Use SentinelOne Singularity platform to detect anomalous PHP process behavior indicating file inclusion exploitation

Monitoring Recommendations

• Enable verbose logging for WordPress and the web server to capture detailed request information
• Configure alerts for any access attempts to sensitive system files from web application processes
• Implement real-time log analysis to identify LFI attack patterns in request URIs and parameters
• Monitor for unusual outbound connections that may indicate post-exploitation activity

How to Mitigate CVE-2026-22427

Immediate Actions Required

• Update the GoTravel theme to a patched version as soon as one becomes available from Mikado-Themes
• Temporarily disable or remove the GoTravel theme if it is not critical to site functionality
• Implement WAF rules to block requests containing directory traversal sequences targeting WordPress theme endpoints
• Review web server and WordPress logs for evidence of exploitation attempts

Patch Information

Organizations using the GoTravel WordPress theme should monitor for security updates from Mikado-Themes. The vulnerability affects versions through 2.1, and a patched version should address the improper file inclusion handling.

For detailed vulnerability information and patch status, refer to the Patchstack WordPress Vulnerability Database.

Workarounds

• Configure web server rules to restrict access to sensitive file paths and block directory traversal patterns
• Implement PHP open_basedir restrictions to limit file access to the WordPress installation directory
• Use WordPress security plugins that provide virtual patching capabilities for known theme vulnerabilities
• Consider using a Web Application Firewall with LFI protection rules as an additional defense layer

# Apache .htaccess configuration to block common LFI patterns
# Add to WordPress root .htaccess file
RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./|\.\.%2f) [NC,OR]
RewriteCond %{QUERY_STRING} (etc/passwd|wp-config\.php) [NC]
RewriteRule .* - [F,L]

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