CVE-2025-57462
📋 TL;DR
MachSol MachPanel 8.0.32 contains a stored cross-site scripting vulnerability that allows attackers to inject malicious scripts via crafted PDF files. When users view these PDFs, the scripts execute in their browser context, potentially compromising their sessions or stealing sensitive data. This affects all organizations using the vulnerable version of MachPanel.
💻 Affected Systems
- MachSol MachPanel
📦 What is this software?
Machpanel by Machsol
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, hijack user sessions, deface the application, or redirect users to malicious sites, potentially leading to full system compromise.
Likely Case
Attackers would steal session cookies or authentication tokens to impersonate legitimate users, potentially accessing sensitive data or performing unauthorized actions.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution, preventing exploitation.
🎯 Exploit Status
Exploitation requires PDF upload capability. The GitHub repository contains proof-of-concept details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.machsol.com/
Restart Required: No
Instructions:
1. Check MachSol website for security advisories. 2. Apply any available patches. 3. Verify the fix by testing PDF upload functionality.
🔧 Temporary Workarounds
Disable PDF Uploads
allTemporarily disable PDF file upload functionality in MachPanel to prevent exploitation.
Implement WAF Rules
allConfigure web application firewall to block malicious PDF uploads containing script tags.
🧯 If You Can't Patch
- Implement strict input validation for all PDF uploads, rejecting files with embedded scripts.
- Deploy content security policy headers to restrict script execution from untrusted sources.
🔍 How to Verify
Check if Vulnerable:
Test by uploading a PDF containing JavaScript payload and checking if it executes when viewed.Check Version:
Check MachPanel admin interface or configuration files for version information.Verify Fix Applied:
Test PDF upload functionality with malicious payloads to ensure scripts are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual PDF upload patterns
- Large number of PDF uploads from single IP
- Error logs showing script execution attempts
Network Indicators:
- HTTP POST requests with PDF files containing script tags
- Unusual outbound connections after PDF viewing
SIEM Query:
source="machpanel" AND (file_extension="pdf" AND (content="<script>" OR content="javascript:"))