CVE-2025-47663: Hospital Management System RCE Vulnerability

CVE-2025-47663 Overview

CVE-2025-47663 is a critical unrestricted file upload vulnerability (CWE-434) affecting the mojoomla Hospital Management System WordPress plugin. This vulnerability allows authenticated attackers with low privileges to upload arbitrary files with dangerous types, including web shells, to the web server. Successful exploitation can lead to complete server compromise, enabling remote code execution, data theft, and persistent backdoor access.

Critical Impact

Attackers can upload malicious PHP web shells to gain full control over the WordPress installation and underlying server, potentially compromising sensitive healthcare data and patient records.

Affected Products

• mojoomla Hospital Management System plugin version 47.0 (20-11-2023) and earlier versions
• WordPress installations running vulnerable versions of the Hospital Management System plugin

Discovery Timeline

• 2025-05-23 - CVE-2025-47663 published to NVD
• 2025-05-23 - Last updated in NVD database

Technical Details for CVE-2025-47663

Vulnerability Analysis

This vulnerability stems from inadequate file upload validation in the mojoomla Hospital Management System WordPress plugin. The application fails to properly restrict the types of files that can be uploaded through its file handling functionality, allowing attackers to bypass intended security controls and upload executable scripts.

The scope change in the attack indicates that exploitation can affect resources beyond the vulnerable component itself—in this case, the entire web server environment. An attacker with minimal authentication can leverage this flaw to establish persistent access through uploaded web shells, effectively converting a simple file upload into full server compromise.

Healthcare management systems are particularly sensitive targets due to the Protected Health Information (PHI) they typically store, making this vulnerability especially concerning from a data protection and regulatory compliance perspective.

Root Cause

The root cause is improper input validation (CWE-434: Unrestricted Upload of File with Dangerous Type). The Hospital Management System plugin does not adequately verify file extensions, MIME types, or file content before allowing uploads. This absence of server-side validation enables attackers to upload PHP files or other executable scripts that the web server will interpret and execute.

Key validation failures include:

• Missing or bypassable file extension checks
• Insufficient MIME type verification
• No content-based file type validation
• Uploaded files stored in web-accessible directories with execution permissions

Attack Vector

The attack is network-based and requires only low-level authentication to exploit. An attacker can access the vulnerable file upload functionality through the plugin's interface and upload a malicious PHP web shell disguised or crafted to bypass any client-side restrictions.

Once uploaded, the attacker can directly access the web shell via HTTP request to execute arbitrary commands on the server with the privileges of the web server process. This typically enables:

• Execution of arbitrary system commands
• File system traversal and data exfiltration
• Database access and manipulation
• Lateral movement within the network
• Installation of additional backdoors

For detailed technical information, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-47663

Indicators of Compromise

• Unexpected PHP files appearing in upload directories (e.g., wp-content/uploads/ or plugin-specific paths)
• Files with suspicious names containing common web shell identifiers (e.g., shell.php, cmd.php, c99.php, r57.php)
• Anomalous outbound network connections from the web server process
• Unusual process spawning from php-fpm, apache, or nginx workers

Detection Strategies

• Implement file integrity monitoring (FIM) on web directories to detect unauthorized file additions
• Monitor web server access logs for requests to newly created PHP files in upload directories
• Deploy web application firewall (WAF) rules to detect web shell upload attempts and suspicious file extensions
• Use endpoint detection and response (EDR) solutions to identify command execution from web server processes

Monitoring Recommendations

• Enable verbose logging for the Hospital Management System plugin file upload functionality
• Configure alerts for PHP file creation events in upload directories
• Monitor for HTTP POST requests with multipart form data targeting the plugin's upload endpoints
• Track process genealogy to identify web server child processes executing system commands

How to Mitigate CVE-2025-47663

Immediate Actions Required

• Disable or remove the mojoomla Hospital Management System plugin until a patch is available
• Audit upload directories for any suspicious or unauthorized PHP files
• Review web server access logs for evidence of exploitation attempts
• Restrict file upload functionality through .htaccess rules or web server configuration
• Implement network segmentation to limit potential lateral movement if compromise occurred

Patch Information

As of the publication date, consult the Patchstack Vulnerability Report for the latest patch status and updates from the vendor. Monitor the WordPress plugin repository for updated versions of the Hospital Management System plugin that address this vulnerability.

Workarounds

• Implement server-side file type restrictions using .htaccess to prevent PHP execution in upload directories
• Configure a Web Application Firewall (WAF) to block file uploads containing PHP code or dangerous extensions
• Restrict plugin access to trusted administrators only and disable file upload features if not required
• Deploy additional authentication layers or IP-based access controls for administrative functions

# Disable PHP execution in upload directories via .htaccess
# Place this file in wp-content/uploads/ or relevant upload directory
cat << 'EOF' > /var/www/html/wp-content/uploads/.htaccess
<FilesMatch "\.(php|phtml|php3|php4|php5|php7|phps|phar)$">
    Deny from all
</FilesMatch>
php_flag engine off
EOF

# Set restrictive permissions on the .htaccess file
chmod 444 /var/www/html/wp-content/uploads/.htaccess