CVE-2025-50003: Amuli Theme PHP File Inclusion Flaw

CVE-2025-50003 Overview

CVE-2025-50003 is a PHP Local File Inclusion (LFI) vulnerability affecting the Amuli WordPress theme developed by axiomthemes. This 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.

The vulnerability, classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), can enable attackers to read sensitive configuration files, access credentials, or potentially achieve remote code execution by including files containing malicious PHP code or log files with injected content.

Critical Impact

Attackers can leverage this Local File Inclusion vulnerability to read sensitive files, potentially exposing database credentials, API keys, and other confidential data stored on the WordPress server.

Affected Products

• WordPress Amuli Theme versions up to and including 2.3.0
• All WordPress installations running vulnerable versions of the Amuli theme by axiomthemes

Discovery Timeline

• 2026-01-22 - CVE-2025-50003 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-50003

Vulnerability Analysis

This vulnerability exists due to insufficient input validation in the Amuli WordPress theme when handling user-controlled input that is passed to PHP include or require statements. The theme fails to properly sanitize filename parameters, allowing attackers to manipulate file paths and include arbitrary files from the local filesystem.

Local File Inclusion vulnerabilities in WordPress themes are particularly dangerous because they can expose sensitive WordPress configuration files such as wp-config.php, which typically contains database credentials and authentication keys. Additionally, if an attacker can control any file content on the server (such as through log poisoning or uploaded files), LFI can be escalated to achieve remote code execution.

Root Cause

The root cause of this vulnerability is improper control of filename parameters used in PHP include(), require(), include_once(), or require_once() functions within the Amuli theme. The theme code accepts user-supplied input and incorporates it into file path construction without adequate validation or sanitization, enabling path traversal sequences to access files outside the intended directory.

Attack Vector

An attacker can exploit this vulnerability by crafting malicious requests that include path traversal sequences (such as ../) or absolute file paths in parameters processed by the vulnerable theme functionality. This allows inclusion of sensitive system files or WordPress configuration files.

Common attack patterns include:

• Using path traversal sequences to escape the web root and access /etc/passwd or similar system files
• Including WordPress configuration files to extract database credentials
• Leveraging log file poisoning combined with LFI to achieve code execution
• Exploiting PHP wrapper schemes (e.g., php://filter) to read source code

For detailed technical information about this vulnerability, refer to the Patchstack WordPress Amuli Vulnerability advisory.

Detection Methods for CVE-2025-50003

Indicators of Compromise

• HTTP requests containing path traversal sequences (../, ..%2f, ..%252f) targeting theme endpoints
• Unusual access patterns to the Amuli theme files or directories
• Web server logs showing requests attempting to access sensitive files like wp-config.php, /etc/passwd, or proc/self/environ
• Error messages in logs indicating failed file inclusion attempts from unexpected directories

Detection Strategies

• Monitor web application firewall (WAF) logs for path traversal and LFI attack signatures
• Implement file integrity monitoring on critical WordPress and system configuration files
• Review web server access logs for suspicious requests targeting theme-related URLs with encoded path traversal sequences
• Deploy intrusion detection rules specifically targeting PHP LFI attack patterns

Monitoring Recommendations

• Enable detailed access logging on the WordPress web server to capture full request URIs and parameters
• Configure alerts for access attempts to sensitive files (wp-config.php, system files)
• Implement real-time monitoring for unusual file read operations from the web server process
• Monitor for PHP errors indicating file inclusion failures that may signal exploitation attempts

How to Mitigate CVE-2025-50003

Immediate Actions Required

• Update the Amuli WordPress theme to a patched version beyond 2.3.0 when available from axiomthemes
• Implement Web Application Firewall (WAF) rules to block path traversal attempts
• Restrict file system permissions to prevent the web server from reading sensitive files outside the web root
• Consider temporarily disabling or replacing the Amuli theme with a secure alternative until a patch is available

Patch Information

Website administrators should check for theme updates through the WordPress dashboard or the official axiomthemes distribution channels. For the latest security information and patch availability, consult the Patchstack advisory.

Workarounds

• Implement strict input validation at the web server level using ModSecurity or similar WAF solutions
• Use open_basedir PHP configuration to restrict file access to the WordPress directory
• Apply principle of least privilege to web server file system permissions
• Consider using a security plugin that provides virtual patching capabilities for WordPress themes

# Apache ModSecurity rule to block path traversal attempts
SecRule REQUEST_URI|ARGS|ARGS_NAMES "@contains ../" \
    "id:1001,phase:2,deny,status:403,msg:'Path traversal attempt blocked',tag:'LFI'"

# PHP open_basedir restriction in php.ini or .htaccess
# php_admin_value open_basedir /var/www/html/wordpress/