CVE-2025-41059
📋 TL;DR
This vulnerability allows authenticated attackers to inject malicious scripts into appRain CMF that execute when other users view affected pages. It affects organizations using appRain CMF version 4.0.5 for content management, potentially compromising user sessions and data.
💻 Affected Systems
- appRain CMF
📦 What is this software?
Apprain by Apprain
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, perform session hijacking, deface websites, or redirect users to malicious sites, leading to complete system compromise.
Likely Case
Authenticated users with malicious intent inject scripts to steal session cookies or credentials from other users viewing the affected addon management pages.
If Mitigated
With proper input validation and output encoding, the XSS payloads would be neutralized, preventing script execution while maintaining functionality.
🎯 Exploit Status
Exploitation requires authenticated access to the vulnerable endpoint and knowledge of the specific parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 4.0.5 (check vendor for specific version)
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-apprain-cmf
Restart Required: No
Instructions:
1. Check appRain vendor website for security updates. 2. Apply the latest patch for appRain CMF. 3. Verify the fix by testing the vulnerable parameters.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to sanitize 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters before processing.
🧯 If You Can't Patch
- Restrict access to /apprain/developer/addons/update/tablesorter to only trusted administrators.
- Implement a Web Application Firewall (WAF) with XSS protection rules.
🔍 How to Verify
Check if Vulnerable:
Test if unsanitized HTML/script input in 'data[Addon][layouts]' or 'data[Addon][layouts_except]' parameters persists and executes when viewed.Check Version:
Check appRain configuration files or admin panel for version information (typically in /apprain/config/ files).Verify Fix Applied:
Attempt to inject XSS payloads into the vulnerable parameters and verify they are properly sanitized or rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /apprain/developer/addons/update/tablesorter with script tags or JavaScript in parameters.
Network Indicators:
- HTTP requests containing malicious script patterns in the 'data[Addon][layouts]' or 'data[Addon][layouts_except]' parameters.
SIEM Query:
source="web_server" AND uri="/apprain/developer/addons/update/tablesorter" AND (request_body CONTAINS "<script>" OR request_body CONTAINS "javascript:")