CVE-2025-28945: Valen WordPress Theme LFI Vulnerability

CVE-2025-28945 Overview

CVE-2025-28945 is a PHP Local File Inclusion (LFI) vulnerability affecting the Valen - Sport, Fashion WooCommerce WordPress Theme developed by snstheme. The vulnerability stems from improper control of filename parameters used in PHP include/require statements, allowing attackers to include arbitrary local files on the server.

This vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), which describes situations where PHP applications fail to properly validate or sanitize user-supplied input before using it in file inclusion functions.

Critical Impact

Attackers can exploit this LFI vulnerability to read sensitive configuration files, access source code, and potentially achieve remote code execution through log poisoning or other inclusion chain techniques on WordPress sites running vulnerable versions of the Valen theme.

Affected Products

• Valen - Sport, Fashion WooCommerce WordPress Theme versions up to and including 2.4
• WordPress installations running the affected Valen theme
• WooCommerce stores using the Valen theme

Discovery Timeline

• 2025-06-09 - CVE-2025-28945 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-28945

Vulnerability Analysis

This Local File Inclusion vulnerability exists within the Valen WordPress theme due to insufficient validation of user-controlled input that is subsequently passed to PHP file inclusion functions such as include(), include_once(), require(), or require_once(). When exploited, an attacker can manipulate file path parameters to include arbitrary files from the server's filesystem.

The network-accessible nature of this vulnerability means attackers can exploit it remotely without requiring authentication. While exploitation complexity is higher due to specific conditions that must be met, successful exploitation can result in complete compromise of confidentiality, integrity, and availability of the affected system.

Local File Inclusion vulnerabilities in WordPress themes are particularly dangerous because they can expose sensitive files like wp-config.php which contains database credentials and authentication keys. Combined with techniques such as log file poisoning or PHP session file inclusion, attackers may escalate from file disclosure to full remote code execution.

Root Cause

The root cause of this vulnerability is the improper sanitization and validation of user-supplied filename parameters before they are used in PHP file inclusion operations. The theme fails to implement adequate input validation measures such as:

• Whitelist-based validation of allowed file paths
• Proper sanitization of directory traversal sequences (e.g., ../)
• Restriction of file extensions to expected types
• Verification that included files exist within expected directories

Attack Vector

The vulnerability is exploitable over the network without requiring prior authentication or user interaction. An attacker can craft malicious HTTP requests containing manipulated file path parameters to include arbitrary local files on the server. Common attack techniques include:

• Using directory traversal sequences (../) to navigate outside intended directories
• Including sensitive configuration files such as /etc/passwd or wp-config.php
• Leveraging log file poisoning by injecting PHP code into log files then including them
• Including PHP session files to execute attacker-controlled code

The vulnerability mechanism involves user input being passed to PHP file inclusion functions without proper validation. For detailed technical information, refer to the Patchstack security advisory.

Detection Methods for CVE-2025-28945

Indicators of Compromise

• Unusual HTTP requests containing directory traversal patterns (../, ..%2f, ..%252f) targeting theme files
• Web server logs showing requests attempting to access sensitive files like /etc/passwd or wp-config.php
• Evidence of log file poisoning with PHP code injection attempts
• Unexpected file access patterns in PHP or WordPress error logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block directory traversal attempts
• Monitor web server access logs for requests containing path traversal sequences targeting the Valen theme
• Deploy file integrity monitoring on critical WordPress configuration files
• Configure intrusion detection systems to alert on LFI attack patterns

Monitoring Recommendations

• Enable detailed access logging on web servers to capture full request URIs and parameters
• Set up real-time alerting for requests matching known LFI exploitation patterns
• Monitor for unusual file read operations from the web server process
• Review WordPress and theme error logs for inclusion-related warnings or errors

How to Mitigate CVE-2025-28945

Immediate Actions Required

• Audit your WordPress installation to determine if the Valen theme version 2.4 or earlier is installed
• Consider temporarily switching to a different WordPress theme until a patched version is available
• Implement WAF rules to block requests containing directory traversal patterns targeting the theme
• Review web server logs for evidence of exploitation attempts

Patch Information

The vulnerability affects Valen - Sport, Fashion WooCommerce WordPress Theme versions through 2.4. Check with snstheme for updated versions that address this vulnerability. For detailed information about the vulnerability and potential patches, refer to the Patchstack vulnerability database.

Workarounds

• Deploy a Web Application Firewall (WAF) with rules specifically targeting LFI attack patterns
• Implement server-level restrictions using open_basedir PHP directive to limit file access scope
• Use file permission hardening to restrict web server read access to only necessary files
• Consider disabling or removing the vulnerable theme functionality if not critical to site operation

# Example Apache .htaccess rule to block common LFI patterns
# Add to WordPress root .htaccess file
RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./|\.\.%2f|\.\.%252f) [NC,OR]
RewriteCond %{QUERY_STRING} (etc/passwd|wp-config\.php) [NC]
RewriteRule .* - [F,L]

# PHP open_basedir restriction in php.ini or .user.ini
# Restrict PHP file operations to WordPress directory only
# open_basedir = /var/www/html/wordpress/:/tmp/