CVE-2025-52815: CityGov Path Traversal Vulnerability

CVE-2025-52815 Overview

CVE-2025-52815 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability affecting the AncoraThemes CityGov WordPress theme. This Local File Inclusion (LFI) flaw allows attackers to manipulate PHP include/require statements, potentially enabling unauthorized access to sensitive files on the server or arbitrary code execution through log poisoning techniques.

Critical Impact

This Local File Inclusion vulnerability in the CityGov WordPress theme could allow attackers to read sensitive configuration files, access credentials, or achieve remote code execution through advanced exploitation techniques.

Affected Products

• AncoraThemes CityGov WordPress Theme version 1.9 and earlier
• WordPress installations running vulnerable CityGov theme versions

Discovery Timeline

• 2025-06-27 - CVE-2025-52815 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-52815

Vulnerability Analysis

This vulnerability stems from CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program. The CityGov WordPress theme fails to properly sanitize user-controlled input before passing it to PHP's include(), require(), or similar file inclusion functions. This allows attackers to manipulate the file path parameter to include arbitrary local files from the server's filesystem.

The vulnerability enables attackers to traverse directory structures and access files outside the intended scope, potentially exposing sensitive information such as WordPress configuration files containing database credentials, server configuration files, or user data.

Root Cause

The root cause is insufficient input validation and sanitization of user-supplied parameters that are subsequently used in PHP file inclusion statements. The CityGov theme does not implement proper allowlisting or path canonicalization to prevent directory traversal sequences (e.g., ../) from being processed, allowing attackers to escape the intended directory context.

Attack Vector

Attackers can exploit this vulnerability by crafting malicious requests containing directory traversal sequences to access files outside the web root. Common targets include:

• /etc/passwd - System user information
• wp-config.php - WordPress database credentials
• Log files - For log poisoning attacks leading to RCE

The exploitation typically involves manipulating GET or POST parameters that control file inclusion paths. Successful exploitation could lead to information disclosure, and when combined with log poisoning techniques, may escalate to remote code execution.

For detailed technical information on this vulnerability, refer to the Patchstack WordPress Vulnerability Database.

Detection Methods for CVE-2025-52815

Indicators of Compromise

• Unusual HTTP requests containing directory traversal patterns such as ../ or URL-encoded variants (%2e%2e%2f)
• Access attempts to sensitive files like wp-config.php, /etc/passwd, or application log files
• Requests with file path parameters pointing outside the theme directory structure
• Anomalous file access patterns in web server logs indicating path traversal attempts

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block requests containing directory traversal sequences
• Monitor web server access logs for patterns indicative of LFI exploitation attempts
• Deploy SentinelOne Singularity Platform to detect and prevent file inclusion attacks in real-time
• Configure intrusion detection systems (IDS) to alert on PHP file inclusion attack signatures

Monitoring Recommendations

• Enable verbose logging for the WordPress installation to capture suspicious request parameters
• Set up alerts for access attempts to sensitive system and configuration files
• Monitor for unusual process execution that may indicate successful code execution via log poisoning
• Regularly audit web server logs for reconnaissance activity targeting the CityGov theme

How to Mitigate CVE-2025-52815

Immediate Actions Required

• Update the CityGov WordPress theme to the latest patched version immediately
• Temporarily disable or remove the CityGov theme if no patch is available
• Implement WAF rules to block requests containing directory traversal patterns
• Review server logs for evidence of exploitation attempts
• Audit WordPress installations for any unauthorized file access or modifications

Patch Information

Organizations using the AncoraThemes CityGov WordPress theme should check for available updates through the theme vendor or the WordPress theme repository. For the latest information on patches and security updates, consult the Patchstack vulnerability advisory.

Workarounds

• Implement strict input validation on all user-controllable parameters used in file operations
• Use a Web Application Firewall to filter malicious requests containing traversal sequences
• Apply the principle of least privilege to web server file system permissions
• Consider using PHP's basename() function to strip directory components from user input
• Enable open_basedir PHP directive to restrict file access to specific directories

# Apache .htaccess rule to block common LFI patterns
RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./) [NC,OR]
RewriteCond %{QUERY_STRING} (\.\.\\) [NC]
RewriteRule .* - [F,L]

# PHP open_basedir configuration in php.ini
# Restrict PHP file operations to specific directories
open_basedir = /var/www/html:/tmp