CVE-2026-3709
📋 TL;DR
CVE-2026-3709 is a SQL injection vulnerability in Simple Flight Ticket Booking System 1.0 that allows attackers to manipulate database queries through the username parameter in register.php. This affects all deployments of version 1.0 that expose the registration functionality. Attackers can potentially access, modify, or delete sensitive booking data.
💻 Affected Systems
- Simple Flight Ticket Booking System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to theft of all customer data (personal information, payment details, booking records), unauthorized administrative access, and potential system takeover.
Likely Case
Data exfiltration of user credentials and booking information, potential privilege escalation to administrative accounts, and manipulation of flight booking records.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only affecting non-sensitive data tables.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making this easily exploitable by attackers with basic SQL injection knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://code-projects.org/
Restart Required: No
Instructions:
1. Check vendor website for security updates
2. If no patch available, implement workarounds
3. Consider migrating to alternative software
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd parameterized queries and input validation to register.php
Modify register.php to use prepared statements with parameterized queries instead of direct string concatenation
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns
Configure WAF to block SQL injection patterns in POST parameters
🧯 If You Can't Patch
- Disable the registration functionality completely if not needed
- Implement network segmentation to isolate the booking system from sensitive databases
🔍 How to Verify
Check if Vulnerable:
Test the username parameter in /register.php with SQL injection payloads like ' OR '1'='1Check Version:
Check the software version in the admin panel or configuration filesVerify Fix Applied:
Test with the same SQL injection payloads and verify they are properly rejected or sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed registration attempts with SQL-like patterns
- Database queries with unusual syntax from registration endpoint
Network Indicators:
- POST requests to /register.php containing SQL keywords (UNION, SELECT, INSERT, etc.)
- Abnormal traffic patterns to registration endpoint
SIEM Query:
source="web_logs" AND uri_path="/register.php" AND (request_body CONTAINS "UNION" OR request_body CONTAINS "SELECT" OR request_body CONTAINS "INSERT")