CVE-2025-52815: CityGov Path Traversal Vulnerability

CVE-2025-52815 Overview

CVE-2025-52815 is a Local File Inclusion (LFI) vulnerability in the AncoraThemes CityGov WordPress theme. The flaw stems from improper control of filenames used in PHP include or require statements [CWE-98]. Attackers can supply crafted input that causes the theme to include arbitrary local files during PHP execution. The vulnerability affects all CityGov versions from initial release through 1.9. Successful exploitation can lead to source code disclosure, sensitive file exposure, and remote code execution when combined with file upload primitives or log poisoning techniques.

Critical Impact
Unauthenticated network attackers can include arbitrary local files on the server, exposing credentials and potentially achieving remote code execution on WordPress sites running CityGov ≤ 1.9.

Affected Products

AncoraThemes CityGov WordPress theme versions through 1.9
WordPress installations using the CityGov theme
Any hosting environment serving the vulnerable theme files

Discovery Timeline

2025-06-27 - CVE-2025-52815 published to the National Vulnerability Database
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-52815

Vulnerability Analysis

The CityGov theme passes user-controllable input into PHP file inclusion functions without sufficient validation. PHP file inclusion functions such as include, include_once, require, and require_once interpret their argument as a filesystem path. When attacker-supplied data reaches these sinks, the interpreter loads and executes the referenced file as PHP code.

The issue is classified under CWE-98, which covers improper control of filename for include/require statements. Although the CWE title references Remote File Inclusion, the realized impact in CityGov is Local File Inclusion based on the advisory text. Exploitation requires no authentication and no user interaction, but the attack complexity is rated high, which suggests environmental conditions or path filtering must be bypassed.

Root Cause

The root cause is the absence of allow-list validation on the parameter that feeds into the include path. Inputs are likely concatenated directly with a base directory and a .php extension, enabling traversal sequences such as ../ to escape the intended directory. Without canonicalization or strict whitelisting, the function resolves attacker-chosen targets on the server.

Attack Vector

An unauthenticated remote attacker sends an HTTP request to a vulnerable CityGov endpoint with a manipulated parameter that influences the include path. The PHP interpreter then loads files such as wp-config.php, session data, or uploaded content. When attackers can plant PHP content into reachable files such as access logs, image metadata, or temporary upload directories, the inclusion converts to remote code execution under the web server account. See the Patchstack CityGov Vulnerability Report for advisory details.

Detection Methods for CVE-2025-52815

Indicators of Compromise

HTTP requests to CityGov theme endpoints containing path traversal sequences such as ../, ..%2f, or null byte variants
Web server access logs showing parameters that reference sensitive paths like wp-config.php, /etc/passwd, or /proc/self/environ
Unexpected PHP errors referencing include(), require(), or failed to open stream for unusual filesystem locations
New or modified PHP files in theme, upload, or temporary directories following suspicious inclusion requests

Detection Strategies

Inspect WordPress access logs for query parameters consumed by CityGov templates that contain filesystem path characters
Deploy web application firewall rules that block traversal patterns and references to known sensitive files
Correlate inclusion attempts with subsequent outbound connections or webshell-like POST traffic

Monitoring Recommendations

Enable PHP error logging and forward logs to a centralized SIEM for pattern analysis
Monitor file integrity on the wp-content/themes/citygov/ directory and the WordPress uploads folder
Alert on process executions originating from the web server user that spawn shells or system utilities

How to Mitigate CVE-2025-52815

Immediate Actions Required

Identify all WordPress instances running the AncoraThemes CityGov theme and confirm the installed version
Apply any vendor patch released above version 1.9, or disable and remove the CityGov theme until a fix is available
Rotate WordPress secrets, database credentials, and API keys referenced in wp-config.php if exploitation is suspected
Review web server logs for traversal patterns dating back to theme installation

Patch Information

The Patchstack advisory tracks fixes for this issue. Administrators should consult the Patchstack CityGov Vulnerability Report for the latest patched version and upgrade guidance from AncoraThemes.

Workarounds

Place a web application firewall in front of WordPress and block requests containing traversal sequences targeting theme parameters
Set the PHP directive open_basedir to restrict file access to the WordPress installation directory
Disable allow_url_include in php.ini to prevent escalation to remote file inclusion
Restrict write permissions on upload directories and disable PHP execution within them via web server configuration

bash

# Example php.ini hardening
allow_url_include = Off
allow_url_fopen = Off
open_basedir = "/var/www/html:/tmp"

# Example Apache rule to block PHP execution in uploads
<Directory "/var/www/html/wp-content/uploads">
    php_admin_flag engine off
</Directory>