CVE-2022-27241
📋 TL;DR
This vulnerability in Mendix applications exposes internal project structure information to unauthenticated remote attackers. It affects Mendix applications built with versions 7 (<7.23.31), 8 (<8.18.18), 9 (<9.11), and specifically version 9.6 (<9.6.12). Attackers can read confidential information without authentication.
💻 Affected Systems
- Mendix Applications
📦 What is this software?
Mendix by Mendix
⚠️ Risk & Real-World Impact
Worst Case
Complete exposure of sensitive application data including database credentials, API keys, business logic, and user data leading to data breach and system compromise.
Likely Case
Exfiltration of configuration files, source code, and sensitive metadata enabling further attacks and intellectual property theft.
If Mitigated
Limited exposure of non-critical project files with no access to production data or credentials.
🎯 Exploit Status
No authentication required, simple HTTP requests can trigger the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Mendix 7.23.31, Mendix 8.18.18, Mendix 9.11, Mendix 9.6.12
Vendor Advisory: https://cert-portal.siemens.com/productcert/pdf/ssa-414513.pdf
Restart Required: Yes
Instructions:
1. Update Mendix Studio/Studio Pro to patched version. 2. Rebuild and redeploy affected applications. 3. Restart application servers.
🔧 Temporary Workarounds
Network Access Control
allRestrict access to Mendix applications using firewalls or network segmentation
Web Application Firewall
allDeploy WAF with rules to block requests accessing internal project structure paths
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Mendix applications from untrusted networks
- Deploy reverse proxy with URL filtering to block access to internal project paths
🔍 How to Verify
Check if Vulnerable:
Check Mendix Studio/Studio Pro version used to build the application against affected versions listCheck Version:
Check Mendix model version in project directory or application metadataVerify Fix Applied:
Verify application was rebuilt with patched Mendix version and test that internal project structure is no longer accessible📡 Detection & Monitoring
Log Indicators:
- HTTP requests to internal project paths like /project/, /model/, /deployment/
Network Indicators:
- Unusual access patterns to application metadata endpoints from external IPs
SIEM Query:
source="web_server" AND (uri_path="/project/*" OR uri_path="/model/*" OR uri_path="/deployment/*")