CVE-2025-7931 Overview
A critical unrestricted file upload vulnerability has been identified in code-projects Church Donation System version 1.0. The vulnerability exists in the /members/admin_pic.php file, where improper validation of the image parameter allows attackers to upload arbitrary files to the server. This flaw can be exploited remotely without authentication, potentially enabling attackers to upload malicious scripts and achieve remote code execution on vulnerable systems.
Critical Impact
Remote attackers can exploit this unrestricted file upload vulnerability to upload malicious files, potentially leading to complete server compromise and unauthorized access to sensitive donation and member data.
Affected Products
- Carmelo Church Donation System 1.0
- Applications using admin_pic.php file upload functionality
- Deployments without proper file type validation
Discovery Timeline
- 2025-07-21 - CVE-2025-7931 published to NVD
- 2025-07-29 - Last updated in NVD database
Technical Details for CVE-2025-7931
Vulnerability Analysis
The vulnerability resides in the file upload handling mechanism within /members/admin_pic.php. The application fails to properly validate or restrict the types of files that can be uploaded through the image parameter. This improper access control (CWE-284) allows attackers to bypass intended restrictions and upload files with arbitrary extensions, including executable scripts such as PHP web shells.
When a malicious file is successfully uploaded, it can be accessed directly through the web server, allowing the attacker to execute arbitrary code in the context of the web application. The network-based attack vector with no authentication requirements makes this vulnerability particularly dangerous for internet-facing deployments.
Root Cause
The root cause of this vulnerability is the absence of proper file type validation and access control in the admin_pic.php upload handler. The application does not verify the file extension, MIME type, or content of uploaded files, nor does it implement proper access restrictions on the upload functionality. This allows any remote user to upload files without adequate security checks.
Attack Vector
The attack can be launched remotely over the network. An attacker can craft a malicious HTTP request to the /members/admin_pic.php endpoint, including a specially crafted payload in the image parameter. The exploit has been publicly disclosed, increasing the risk of active exploitation in the wild.
The attack typically involves:
- Identifying a vulnerable Church Donation System deployment
- Crafting a malicious file (such as a PHP web shell) disguised with an image-related name
- Uploading the file through the vulnerable admin_pic.php endpoint
- Accessing the uploaded malicious file to execute arbitrary commands
For detailed technical information about this vulnerability, refer to the GitHub Issue Report and the VulDB entry #317060.
Detection Methods for CVE-2025-7931
Indicators of Compromise
- Unusual files with executable extensions (.php, .phtml, .php5) in upload directories
- Web shell signatures or suspicious PHP files in the /members/ directory or associated upload folders
- Unexpected HTTP POST requests to /members/admin_pic.php from external IP addresses
- Evidence of command execution or reverse shell connections originating from the web server
Detection Strategies
- Monitor web server access logs for suspicious POST requests to admin_pic.php
- Implement file integrity monitoring on upload directories to detect unauthorized file additions
- Deploy web application firewall (WAF) rules to block uploads of executable file types
- Scan uploaded files for web shell signatures and malicious content patterns
Monitoring Recommendations
- Enable detailed logging for all file upload operations in the application
- Configure alerts for new file creation events in web-accessible directories
- Monitor network traffic for outbound connections initiated by the web server process
- Implement regular security scans of the web application directories for malicious files
How to Mitigate CVE-2025-7931
Immediate Actions Required
- Restrict access to /members/admin_pic.php using web server access controls or authentication
- Implement file extension whitelist allowing only image formats (.jpg, .jpeg, .png, .gif)
- Configure upload directory to be non-executable by the web server
- Review and remove any suspicious files already present in upload directories
- Consider taking the application offline until proper mitigations are in place
Patch Information
No official vendor patch is currently available for this vulnerability. Organizations using Church Donation System 1.0 should implement the workarounds below and monitor for updates from the Code Projects Resource Hub. Given the public disclosure of this exploit, immediate protective measures are essential.
Workarounds
- Add server-side file type validation that checks both file extension and MIME type
- Implement file content verification to ensure uploaded files are valid images
- Store uploaded files outside the web root and serve them through a controlled handler
- Disable PHP execution in upload directories via .htaccess or web server configuration
- Add authentication requirements to the upload functionality
# Apache configuration to disable PHP execution in upload directory
# Add to .htaccess in the upload directory
<FilesMatch "\.(?i:php|php3|php4|php5|phtml)$">
Require all denied
</FilesMatch>
# Alternative: Disable PHP engine entirely for the directory
php_flag engine off
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
