How to Secure Your FiveM QBCore Server Against Exploits

QBCore is a powerful framework for running a FiveM roleplay server, but like any online system, it can be vulnerable to exploits if not properly secured. Protecting your server from cheaters, hackers, and malicious users is crucial to ensuring a smooth gameplay experience for your community. This guide will cover essential steps to secure your QBCore server and minimize the risk of exploits.

1. Keep Your QBCore Up to Date

The QBCore framework is constantly being updated to fix bugs and security vulnerabilities. Always keep your server up to date with the latest QBCore release. Regularly check for updates in the official QBCore GitHub repository and apply them as soon as possible.

2. Use a Strong Firewall & DDoS Protection

A firewall helps prevent unauthorized access to your server, while DDoS protection protects against attacks that can crash your server. Consider using a provider like:

• OVH Game (Built-in DDoS protection for gaming servers)
• Cloudflare Spectrum (For additional security layers)
• CSF Firewall (For blocking suspicious connections)

Configure your firewall to block unwanted ports and only allow essential ones:

TCP: 30120, 30121
UDP: 30120, 30121

Block unused ports to prevent unauthorized access.

3. Disable Unused Resources

Unused or poorly coded resources can be an entry point for exploits. Review your server.cfg and remove any scripts that you are not using. Also, be cautious when adding third-party scripts from unverified sources.

4. Use an Anti-Cheat System

A good anti-cheat system can detect and prevent players from using exploits. Some of the best FiveM anti-cheats include:

• EasyAdmin (Basic detection & moderation)
• FiveM AntiCheat (Advanced exploit detection)
• Custom QBCore-Based AntiCheat (If you have development experience, you can create a custom solution tailored to your server.)

5. Restrict Permissions for Admins & Staff

Not all staff members need full admin access. Use permission-based systems to limit access to sensitive commands. In permissions.cfg, define roles and their specific permissions to avoid giving too much power to untrusted users.

6. Secure Your Database

Hackers can target your database if it’s not properly secured. Follow these steps to protect it:

• Never use the default root MySQL user
• Change the database port from 3306 to something unique
• Disable remote access unless necessary
• Use strong passwords for database users

If you’re using MariaDB or MySQL, make sure to disable unnecessary remote connections:

bind-address = 127.0.0.1

7. Implement Server-Side Validation for Client Requests

Many exploits occur because scripts trust client-side input. Always validate inputs server-side before executing critical actions. Avoid using direct client-to-server triggers without verification. Example:

RegisterServerEvent('qb-core:giveMoney')
AddEventHandler('qb-core:giveMoney', function(amount)
    local src = source
    if amount > 0 and amount < 5000 then
        -- Safe transaction
    else
        -- Possible exploit attempt, log and block
    end
end)

8. Monitor Server Logs Regularly

Regularly check your server logs (logs.txt, server.log, etc.) for unusual activity. Look for:

• Players executing unknown commands
• Unusual spikes in server performance
• Suspicious transactions in the economy system

Use logging tools like Sentry.io or Logwatch for automated log analysis.

9. Encrypt & Protect Sensitive Files

Your server.cfg, API keys, and other sensitive files should be protected against unauthorized access. You can:

• Use file permissions to restrict access (chmod 600 server.cfg)
• Store API keys in environment variables instead of plaintext
• Avoid exposing sensitive information in client-side code

10. Run Security Audits on Your Server

Periodically test your server for vulnerabilities. There are several ways to do this:

• Penetration Testing (Hire security experts to test your server)
• Use Security Scanners (e.g., Nmap, Nikto, or Metasploit)
• Manually Review Scripts (Check for insecure event triggers and backdoors in code)

Final Thoughts

By following these steps, you can significantly reduce the risk of exploits on your QBCore server. Security is an ongoing process, so stay updated with new threats and improvements in FiveM security. If you find vulnerabilities, report them to the QBCore development team and work with trusted developers to keep your server safe.

Taking security seriously will not only protect your server but also improve player trust and long-term success in your roleplay community.