Base44 App Security: How to Secure Your AI-Built App

What is Base44 App Security and Why Does It Matter?

Base44 app security refers to the set of practices and configurations needed to protect apps built on the Base44 platform—especially those generated quickly using AI coding tools like Cursor, Bolt.new, or v0. If you're building a Base44 app, you need to secure environment variables, API keys, authentication flows, and database access from the start. This guide gives you a direct, actionable plan to lock down your Base44 application.

Common Security Risks in Base44 Apps

Base44 is a powerful platform for deploying full-stack apps, but vibe-coded apps often inherit security gaps. Here are the most common issues:

Step-by-Step Guide to Secure a Base44 App

1. Protect Environment Variables

Never hardcode sensitive values. Use Base44's built-in environment variable manager:

# Bad: hardcoded in code
const apiKey = "sk-1234567890abcdef";

# Good: stored in Base44 environment variables
const apiKey = process.env.MY_API_KEY;

In your Base44 project dashboard, go to Settings > Environment Variables and add all secrets. For local development, use a .env.local file that is listed in .gitignore.

2. Secure API Keys and Tokens

3. Implement Proper Authentication

Use a robust auth solution like Supabase Auth, Clerk, or NextAuth.js. Avoid building custom auth from scratch. Example with Supabase:

import { createClient } from '@supabase/supabase-js';

const supabase = createClient(
  process.env.SUPABASE_URL,
  process.env.SUPABASE_ANON_KEY // anon key is safe for client, but use RLS
);

Always enable Row Level Security on your Supabase tables. Test with a simple policy:

-- Allow users to read only their own data
CREATE POLICY "Users can view own data" ON public.profiles
  FOR SELECT USING (auth.uid() = id);

4. Configure CORS Strictly

In your backend (e.g., Next.js API routes or Express), set specific allowed origins:

// Next.js middleware or API route
res.setHeader('Access-Control-Allow-Origin', 'https://yourdomain.com');
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE');

Avoid using wildcard * in production.

5. Validate Input and Sanitize Output

AI-generated code often misses input validation. Use libraries like Zod or Yup:

import { z } from 'zod';

const schema = z.object({
  email: z.string().email(),
  password: z.string().min(8),
});

const parsed = schema.parse(req.body);

This prevents injection attacks and malformed data.

6. Add Security Headers

Set headers like Content-Security-Policy, X-Content-Type-Options, and Strict-Transport-Security. In a Next.js app, use next.config.js:

module.exports = {
  async headers() {
    return [
      {
        source: '/(.*)',
        headers: [
          { key: 'X-Frame-Options', value: 'DENY' },
          { key: 'X-Content-Type-Options', value: 'nosniff' },
          { key: 'Referrer-Policy', value: 'strict-origin-when-cross-origin' },
        ],
      },
    ];
  },
};

Automated Security Scanning for Base44 Apps

Manual checks are error-prone. Use a security scanning platform like OverMCP to automatically detect hardcoded secrets, misconfigurations, and vulnerabilities in your Base44 app before deployment. OverMCP integrates with your CI/CD pipeline and provides a clear report with fix suggestions.

Checklist: Secure Your Base44 App Before Launch

FAQ

What is the most common security mistake in Base44 apps?

The most common mistake is hardcoding API keys or database credentials directly in the source code, which can be exposed via version control or client-side bundles. Always use environment variables.

Does Base44 provide built-in security features?

Base44 offers SSL encryption, environment variable management, and basic DDoS protection. However, application-level security (authentication, input validation, CORS) is your responsibility.

How can I scan my Base44 app for vulnerabilities automatically?

You can use OverMCP, a security scanner designed for vibe-coded apps. It detects leaked secrets, misconfigurations, and common OWASP vulnerabilities, and integrates with your deployment pipeline.