CVE-2025-48292: Tourmaster Path Traversal Vulnerability

CVE-2025-48292 Overview

CVE-2025-48292 is a PHP Local File Inclusion (LFI) vulnerability affecting the GoodLayers Tourmaster plugin for WordPress. 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's filesystem. This can lead to sensitive information disclosure, configuration file exposure, and potentially remote code execution if combined with other attack techniques.

Critical Impact

Unauthenticated attackers can exploit this LFI vulnerability to read sensitive server files, potentially exposing credentials, configuration data, and application source code.

Affected Products

• GoodLayers Tourmaster WordPress Plugin versions up to and including 5.3.8
• WordPress installations running vulnerable Tourmaster plugin versions

Discovery Timeline

• 2025-05-23 - CVE-2025-48292 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-48292

Vulnerability Analysis

This vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). The Tourmaster plugin fails to properly sanitize user-supplied input before using it in PHP file inclusion operations. When a PHP application uses include, require, include_once, or require_once statements with user-controllable input, attackers can manipulate the file path to access files outside the intended directory structure.

Local File Inclusion vulnerabilities in WordPress plugins are particularly dangerous because they can be leveraged to read sensitive files such as wp-config.php, which contains database credentials, authentication keys, and other security-critical configuration values. Additionally, if log files are writable by the web server, attackers may be able to inject malicious PHP code into logs and then include them to achieve remote code execution.

Root Cause

The root cause of this vulnerability lies in insufficient input validation and sanitization of user-supplied parameters that control file paths within the Tourmaster plugin. The plugin accepts filename or path parameters from untrusted sources and passes them directly to PHP's file inclusion functions without adequately filtering path traversal sequences (such as ../) or validating that the requested file is within an allowed directory.

Attack Vector

The vulnerability is exploitable over the network without requiring authentication. An attacker can craft malicious HTTP requests containing path traversal sequences to navigate the server's directory structure and include arbitrary files. The attack complexity is considered high due to potential requirements for specific server configurations or file locations, but successful exploitation can result in complete compromise of confidentiality, integrity, and availability.

Typical attack patterns include:

• Using directory traversal sequences to read /etc/passwd or other system files
• Accessing WordPress configuration files to extract database credentials
• Including log files containing attacker-injected PHP code for remote code execution
• Reading plugin or theme source code to identify additional vulnerabilities

Detection Methods for CVE-2025-48292

Indicators of Compromise

• Unusual HTTP requests containing path traversal patterns such as ../, ..%2f, or ....// targeting Tourmaster plugin endpoints
• Access log entries showing attempts to read sensitive files like /etc/passwd, wp-config.php, or .htaccess
• Unexpected file access patterns in web server logs from Tourmaster-related URLs
• Error log entries indicating failed file inclusion attempts with unusual file paths

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block path traversal patterns in HTTP request parameters
• Monitor HTTP access logs for requests containing directory traversal sequences targeting /wp-content/plugins/tourmaster/ paths
• Deploy file integrity monitoring to detect unauthorized access to sensitive configuration files
• Configure intrusion detection systems to alert on LFI attack signatures

Monitoring Recommendations

• Enable detailed logging for the WordPress application and web server to capture request parameters
• Set up alerts for repeated failed file access attempts that may indicate exploitation attempts
• Monitor for unusual outbound network connections that could indicate post-exploitation activity
• Review access logs regularly for suspicious patterns targeting the Tourmaster plugin directory structure

How to Mitigate CVE-2025-48292

Immediate Actions Required

• Update the GoodLayers Tourmaster plugin to a version newer than 5.3.8 that addresses this vulnerability
• If an update is not immediately available, consider temporarily disabling the Tourmaster plugin until a patch is released
• Review server access logs for any evidence of exploitation attempts
• Implement a Web Application Firewall (WAF) with rules to block LFI attack patterns

Patch Information

Refer to the Patchstack Advisory for Tourmaster Plugin for the latest patch information and remediation guidance from the vendor. Users should update to the latest available version of the Tourmaster plugin that addresses this vulnerability.

Workarounds

• Implement a Web Application Firewall with strict rules to filter path traversal patterns in requests
• Use PHP open_basedir configuration to restrict file system access to only necessary directories
• Disable directory listing and limit PHP file inclusion paths through server configuration
• Apply principle of least privilege to web server process file system permissions

# PHP configuration hardening example
# Add to php.ini or .htaccess to restrict file access
php_value open_basedir "/var/www/html:/tmp"
php_flag allow_url_include off
php_flag allow_url_fopen off