CVE-2025-54031: Support Board PHP File Inclusion Flaw

CVE-2025-54031 Overview

CVE-2025-54031 is an Improper Control of Filename for Include/Require Statement in PHP Program vulnerability affecting the Schiocco Support Board WordPress plugin. This Local File Inclusion (LFI) vulnerability allows attackers to manipulate file paths within PHP include statements, potentially enabling unauthorized access to sensitive files on the server.

Critical Impact

This vulnerability allows attackers to include arbitrary local files on the server, potentially exposing sensitive configuration files, credentials, or enabling further exploitation through log poisoning techniques.

Affected Products

• Schiocco Support Board WordPress plugin version 3.8.0 and earlier
• WordPress installations running vulnerable Support Board plugin versions

Discovery Timeline

• 2025-08-20 - CVE-2025-54031 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-54031

Vulnerability Analysis

This vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). The Support Board plugin fails to properly validate and sanitize user-supplied input before using it in PHP include or require statements. This allows an attacker to manipulate the file path parameter to include arbitrary local files from the server's filesystem.

Local File Inclusion vulnerabilities in PHP applications are particularly dangerous because they can be leveraged in multiple ways. An attacker can read sensitive configuration files such as wp-config.php which contains database credentials, access system files like /etc/passwd, or in some cases achieve Remote Code Execution through log poisoning or other advanced techniques.

Root Cause

The root cause of this vulnerability lies in insufficient input validation and sanitization within the Support Board plugin's file handling logic. When the plugin processes user-supplied data for file inclusion operations, it does not adequately filter or restrict the file paths that can be specified. This allows path traversal sequences (such as ../) and direct file path references to be processed by PHP's include functions, resulting in arbitrary file inclusion.

Attack Vector

The attack vector involves manipulating parameters passed to the vulnerable plugin functionality. An attacker can craft malicious requests that include path traversal sequences to navigate outside the intended directory structure and access files anywhere on the server where the web server has read permissions.

The vulnerability can be exploited through web requests to the WordPress installation. The attacker does not require authentication in most LFI scenarios, making this potentially exploitable by unauthenticated remote attackers. By carefully constructing the file path parameter, an attacker can include sensitive files such as configuration files, environment files, or log files.

For detailed technical information about this vulnerability, refer to the Patchstack vulnerability database entry.

Detection Methods for CVE-2025-54031

Indicators of Compromise

• Web server access logs containing path traversal sequences such as ../, ..%2f, or ..%252f in requests targeting Support Board plugin endpoints
• Requests attempting to access sensitive files like /etc/passwd, wp-config.php, or .htaccess through plugin parameters
• Unusual file read operations logged by file integrity monitoring systems
• Error logs indicating failed file inclusion attempts with suspicious paths

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block requests containing path traversal patterns targeting WordPress plugins
• Monitor web server logs for unusual patterns of requests to the Support Board plugin with suspicious parameter values
• Deploy intrusion detection systems (IDS) with signatures for PHP Local File Inclusion attack patterns
• Enable PHP error logging and monitor for include/require warnings with unexpected file paths

Monitoring Recommendations

• Configure real-time alerting for any requests containing directory traversal patterns (../, encoded variants)
• Monitor file access patterns on the server for reads to sensitive system or WordPress configuration files
• Implement centralized logging for all web application traffic to enable rapid incident response
• Regularly audit WordPress plugin activity and access logs for anomalous behavior

How to Mitigate CVE-2025-54031

Immediate Actions Required

• Update the Schiocco Support Board plugin to the latest available version that addresses this vulnerability
• If an update is not immediately available, consider temporarily disabling the Support Board plugin until a patch is released
• Review web server access logs for any signs of attempted exploitation
• Implement Web Application Firewall rules to block path traversal attempts targeting the plugin

Patch Information

Check the Patchstack vulnerability database for the latest patch information and remediation guidance from the vendor. WordPress administrators should monitor the plugin repository for security updates and apply them immediately when available.

Workarounds

• Implement server-level restrictions to prevent PHP from including files outside the web root directory using open_basedir configuration
• Deploy a Web Application Firewall (WAF) with rules to filter requests containing path traversal patterns
• Restrict file system permissions to limit what files the web server process can read
• Consider using security plugins like Wordfence or Sucuri to add an additional layer of protection against LFI attacks

# PHP configuration to restrict file inclusion
# Add to php.ini or .htaccess
open_basedir = /var/www/html:/tmp

# Apache mod_security rule to block path traversal
SecRule REQUEST_URI "../" "id:1001,deny,status:403,msg:'Path Traversal Attempt'"