CVE-2025-58900: Unitravel Path Traversal Vulnerability

CVE-2025-58900 Overview

CVE-2025-58900 is a Local File Inclusion (LFI) vulnerability affecting the AncoraThemes UniTravel WordPress theme. 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. This flaw can potentially lead to sensitive information disclosure, configuration file exposure, and in certain scenarios, remote code execution through log poisoning or other advanced exploitation techniques.

Critical Impact

Attackers can leverage this LFI vulnerability to read sensitive server files, potentially exposing database credentials, WordPress configuration secrets, and other critical system information that could enable further attacks.

Affected Products

• AncoraThemes UniTravel WordPress theme versions up to and including 1.4.2
• WordPress installations running the vulnerable UniTravel theme
• All configurations where user-controlled input reaches include/require statements

Discovery Timeline

• 2025-12-18 - CVE-2025-58900 published to NVD
• 2026-01-20 - Last updated in NVD database

Technical Details for CVE-2025-58900

Vulnerability Analysis

This vulnerability is classified as CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). The UniTravel WordPress theme fails to properly sanitize user-supplied input before passing it to PHP's include or require functions. When an attacker provides a crafted path, they can traverse the directory structure and include arbitrary files from the server's filesystem.

The network-accessible attack vector allows remote exploitation without requiring authentication, though the high attack complexity indicates that specific conditions or configurations may be necessary for successful exploitation. When exploited, the vulnerability can compromise the confidentiality, integrity, and availability of the affected system.

Root Cause

The root cause lies in insufficient input validation and sanitization of user-controlled parameters that are subsequently used in PHP file inclusion operations. The UniTravel theme does not adequately restrict which files can be included, allowing path traversal sequences (such as ../) to escape the intended directory and access sensitive files elsewhere on the filesystem.

Attack Vector

The vulnerability is exploitable over the network without user interaction. An attacker can craft malicious HTTP requests containing path traversal sequences to manipulate the file inclusion mechanism. Common targets include:

• WordPress configuration files (wp-config.php) containing database credentials
• System files like /etc/passwd for user enumeration
• Application log files for potential log poisoning attacks
• PHP session files for session hijacking

The exploitation typically involves manipulating a vulnerable parameter in theme-related requests to include files outside the intended directory scope. For detailed technical information, see the Patchstack security advisory.

Detection Methods for CVE-2025-58900

Indicators of Compromise

• HTTP requests containing path traversal patterns such as ../, ..%2f, or encoded variants targeting UniTravel theme endpoints
• Unusual access patterns to theme files with suspicious query parameters
• Server logs showing attempts to access system files like /etc/passwd or wp-config.php through theme requests
• Error logs indicating file inclusion failures for non-existent paths

Detection Strategies

• Configure web application firewalls (WAF) to detect and block path traversal sequences in requests to WordPress theme directories
• Implement file integrity monitoring on critical WordPress files and server configuration files
• Deploy intrusion detection rules that alert on anomalous file access patterns through web requests
• Review Apache/Nginx access logs for requests containing encoded directory traversal characters

Monitoring Recommendations

• Enable verbose logging for the WordPress installation and monitor for unusual theme-related requests
• Set up alerts for failed file access attempts that may indicate exploitation attempts
• Monitor for changes to sensitive configuration files that could indicate successful exploitation
• Track outbound connections from the web server that could indicate post-exploitation activity

How to Mitigate CVE-2025-58900

Immediate Actions Required

• Update the UniTravel WordPress theme to the latest patched version immediately
• If an update is not available, consider temporarily disabling or replacing the UniTravel theme
• Audit web server logs for any signs of exploitation attempts
• Review WordPress configuration files for any unauthorized modifications

Patch Information

Organizations should monitor the Patchstack vulnerability database for official patch releases from AncoraThemes. Ensure the UniTravel theme is updated beyond version 1.4.2 when a security patch becomes available.

Workarounds

• Deploy a Web Application Firewall (WAF) with rules to block path traversal patterns in requests to the UniTravel theme
• Implement PHP open_basedir restrictions to limit which directories PHP can access
• Disable the vulnerable theme functionality if possible and use an alternative theme until a patch is released
• Apply strict input validation at the web server level to sanitize requests before they reach WordPress

# Example Apache configuration to restrict directory traversal
<Directory "/var/www/html/wp-content/themes/unitravel">
    # Deny requests containing path traversal sequences
    RewriteEngine On
    RewriteCond %{QUERY_STRING} (\.\./|\.\.%2f) [NC,OR]
    RewriteCond %{REQUEST_URI} (\.\./|\.\.%2f) [NC]
    RewriteRule .* - [F,L]
</Directory>

# PHP open_basedir restriction in php.ini or vhost config
# Limits PHP file operations to specified directories
php_admin_value open_basedir "/var/www/html:/tmp"