CVE-2025-11656
📋 TL;DR
CVE-2025-11656 is an unrestricted file upload vulnerability in ProjectsAndPrograms School Management System that allows attackers to upload malicious files remotely via the /assets/editNotes.php endpoint. This affects all installations up to commit 6b6fae5426044f89c08d0dd101c7fa71f9042a59. Attackers can exploit this to upload webshells or other malicious content to compromise the system.
💻 Affected Systems
- ProjectsAndPrograms School Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through webshell upload leading to remote code execution, data theft, and lateral movement within the network.
Likely Case
Attackers upload webshells to gain persistent access, deface websites, or deploy ransomware on vulnerable systems.
If Mitigated
File uploads are blocked or sanitized, limiting attackers to unsuccessful upload attempts that may be detected in logs.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making this easy for attackers to weaponize. No authentication is required for exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch is available. Consider upgrading to a version after commit 6b6fae5426044f89c08d0dd101c7fa71f9042a59 if available, or apply workarounds.
🔧 Temporary Workarounds
Block access to vulnerable endpoint
allRestrict access to /assets/editNotes.php using web server configuration or firewall rules.
# Apache: RewriteRule ^/assets/editNotes\.php$ - [F]
# Nginx: location ~ ^/assets/editNotes\.php$ { deny all; }
Implement file upload validation
allAdd server-side validation to restrict file types, extensions, and content for uploads.
# Example PHP validation: $allowed = ['jpg', 'png']; $ext = strtolower(pathinfo($file, PATHINFO_EXTENSION)); if(!in_array($ext, $allowed)) { die('Invalid file'); }
🧯 If You Can't Patch
- Implement a Web Application Firewall (WAF) with rules to block malicious file upload attempts.
- Monitor file upload directories for suspicious files and implement file integrity monitoring.
🔍 How to Verify
Check if Vulnerable:
Check if /assets/editNotes.php exists and accepts file uploads without proper validation. Test by attempting to upload a non-whitelisted file type.Check Version:
No standard version command. Check commit hash or installation date against vulnerable range.Verify Fix Applied:
Verify that file uploads are properly validated and restricted, and that /assets/editNotes.php is either patched or inaccessible.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /assets/editNotes.php
- Uploads of executable files (e.g., .php, .exe) to upload directories
- Files with suspicious names in /assets/ or upload directories
Network Indicators:
- HTTP requests with file uploads to /assets/editNotes.php
- Traffic spikes to upload endpoints
SIEM Query:
source="web_logs" AND (url="/assets/editNotes.php" OR file_upload="true") AND (file_extension="php" OR file_extension="exe")