CVE-2026-1152
📋 TL;DR
This vulnerability in technical-laohu mpay up to version 1.2.4 allows remote attackers to upload arbitrary files via the QR Code Image Handler component. The unrestricted file upload vulnerability can lead to server compromise or data exfiltration. All users running affected versions are at risk.
💻 Affected Systems
- technical-laohu mpay
📦 What is this software?
Mpay by Technical Laohu
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment
Likely Case
Malicious file upload enabling web shell installation, data manipulation, or denial of service
If Mitigated
Limited impact with proper file upload validation and server hardening
🎯 Exploit Status
Exploit disclosed publicly on GitHub, remote attack vector
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
No official patch available. Consider upgrading if vendor releases fix or implementing workarounds.
🔧 Temporary Workarounds
File Upload Restriction
allImplement strict file upload validation for QR Code Image Handler
# Configure web server to restrict uploads to specific file types and sizes
# Example for Apache: LimitRequestBody 1048576
# Example for Nginx: client_max_body_size 1m
Input Validation
allAdd server-side validation for codeimg parameter
# Validate file type, size, and content before processing
# Example PHP: if (!in_array($file_type, ['image/png', 'image/jpeg'])) { die('Invalid file type'); }
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious upload patterns
- Isolate the affected system from critical networks and implement network segmentation
🔍 How to Verify
Check if Vulnerable:
Check if technical-laohu mpay version is 1.2.4 or earlierCheck Version:
# Check version in application configuration or package managerVerify Fix Applied:
Test file upload functionality with malicious payloads to ensure proper validation📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to QR Code handler
- Large or unexpected file types in upload logs
- Failed upload attempts with suspicious filenames
Network Indicators:
- HTTP POST requests to QR Code Image Handler with unusual payloads
- File uploads with non-image extensions
SIEM Query:
source="web_logs" AND (uri="*qr*" OR uri="*upload*") AND (method="POST") AND (size>1048576 OR file_type!="image/*")