CVE-2025-41043
📋 TL;DR
This vulnerability allows authenticated attackers to inject malicious scripts into appRain CMF that execute when other users view affected pages. It affects all users of appRain CMF version 4.0.5 who have access to the AppReportCode management interface. The stored XSS can lead to session hijacking, credential theft, or unauthorized actions.
💻 Affected Systems
- appRain CMF
📦 What is this software?
Apprain by Apprain
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, take full control of the CMS, deface websites, or pivot to internal systems.
Likely Case
Authenticated users with malicious intent could hijack sessions of other users, steal cookies, or perform unauthorized actions within the CMS.
If Mitigated
With proper input validation and output encoding, the vulnerability would be neutralized with minimal impact.
🎯 Exploit Status
Requires authenticated access and knowledge of the vulnerable parameters. No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 4.0.6 or later
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-apprain-cmf
Restart Required: No
Instructions:
1. Backup your current installation. 2. Download the latest version from the official appRain repository. 3. Replace vulnerable files with patched versions. 4. Verify the fix by testing the affected parameters.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation for the 'data[AppReportCode][id]' and 'data[AppReportCode][name]' parameters
Output Encoding
allApply proper HTML encoding to all user-controlled data before rendering in web pages
🧯 If You Can't Patch
- Restrict access to /apprain/appreport/manage/ to only trusted administrators
- Implement a web application firewall (WAF) with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check if your appRain CMF version is 4.0.5 by examining the version file or admin panelCheck Version:
Check the version.php file or admin dashboard for version informationVerify Fix Applied:
Test the vulnerable parameters with XSS payloads and verify they are properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /apprain/appreport/manage/ with script tags in parameters
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing <script> tags in the 'data[AppReportCode][id]' or 'data[AppReportCode][name]' parameters
SIEM Query:
source="web_server" AND (uri="/apprain/appreport/manage/" AND (param="data[AppReportCode][id]" OR param="data[AppReportCode][name]") AND value MATCHES "<script>")