Base44 Security Issues
The most common security vulnerabilities in Base44 applications—and how to fix them before attackers find them.
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7 Security Issues Documented
Common vulnerabilities found in Base44 applications
Critical Security Issues
API Keys Embedded in Generated Frontend Code
criticalBase44's prompt-to-code generation embeds API keys (OpenAI, Stripe, payment processors) directly in frontend JavaScript files rather than server-side configuration.
Keys are visible in browser DevTools and JS bundles. Attackers extract them to abuse your API quotas, make unauthorized charges, or access third-party services.
Search generated code: grep -r 'sk-' . for OpenAI, grep -r 'sk_live' . for Stripe, grep -r 'api_key\|apiKey' . for others.
Move all keys to server-side environment variables. Create proxy API endpoints for third-party calls so keys never reach the browser.
Missing Authorization in Generated API Routes
criticalBase44 generates API endpoints that check if a user is logged in but don't verify they own the requested resource. This creates IDOR (Insecure Direct Object Reference) vulnerabilities.
Any authenticated user can access any other user's data by changing resource IDs in API calls. Complete data breach across all users.
Log in as User A, note the ID of a resource. Log in as User B, change the ID in the API request to User A's resource. If data returns, IDOR exists.
Add user_id checks to every database query in generated API routes. Verify the authenticated user owns the resource before returning data.
High Severity Issues
Authentication Without Rate Limiting
highBase44-generated login endpoints accept unlimited attempts with no rate limiting, account lockout, or CAPTCHA protection.
Attackers can brute-force passwords by trying thousands of combinations per minute. Credential stuffing attacks using leaked password databases become trivial.
Send 100 login requests in rapid succession. If all are processed without delay or blocking, rate limiting is missing.
Add rate limiting middleware (e.g., express-rate-limit) to login and signup endpoints. Implement account lockout after 5 failed attempts.
No Server-Side Input Validation
highGenerated API endpoints accept and process user input without type checking, length limits, or format validation on the server.
SQL injection, NoSQL injection, type confusion errors, and data corruption. Attackers can send arbitrary payloads directly to API endpoints.
Submit unexpected data types (arrays instead of strings, very long strings, special characters) to API endpoints and check if they're processed.
Add schema validation with zod or joi to every endpoint. Validate input types, lengths, and formats before any database operation.
Overly Permissive CORS Configuration
highBase44 often generates CORS headers with Access-Control-Allow-Origin: * for development convenience, leaving it in production.
Any website can make authenticated requests to your API on behalf of your users, enabling cross-site data theft.
Check your API's CORS headers using browser DevTools. If Access-Control-Allow-Origin is *, it's overly permissive.
Set Access-Control-Allow-Origin to your specific domain. Remove the wildcard before deploying to production.
Medium Severity Issues
Debug and Test Routes in Production
mediumGenerated code may include /debug, /test, or /admin routes without authentication that were useful during development.
Exposed internal state, database dumps, or admin functionality accessible to anyone who discovers the URL.
Try accessing /debug, /test, /admin, /api/test on your production URL. Check generated route files for test-only endpoints.
Remove all debug routes before deploying. If admin routes are needed, add proper authentication middleware.
Missing Security Headers
mediumBase44 doesn't generate Content-Security-Policy, HSTS, or X-Frame-Options configuration. The deployed site has no browser-level protections.
Increased XSS risk from injected scripts, clickjacking attacks via iframe embedding, and no HTTPS enforcement.
Check response headers in browser DevTools Network tab, or run a VAS scan.
Configure headers in your hosting platform settings or add a middleware that sets CSP, HSTS, X-Frame-Options, and X-Content-Type-Options.
How to Prevent These Issues
- Run automated security scans before every deployment
- Configure database access controls (RLS/Security Rules) first
- Store all secrets in environment variables, never in code
- Enable email verification and strong password policies
- Add security headers to your hosting configuration
- Review AI-generated code for security before accepting
Find Issues Before Attackers Do
VAS scans your Base44 app for all these issues automatically. Scans from $5, instant results.
Get Starter ScanFrequently Asked Questions
What are the most common Base44 security issues?
The most common issues are: exposed API keys/secrets, missing database access controls (RLS or Security Rules), weak authentication configuration, and missing security headers. These account for over 80% of vulnerabilities in Base44 applications.
How do I find security issues in my Base44 app?
Run a VAS security scan for automated detection of common vulnerabilities. Manually check: database access controls, search code for hardcoded secrets, verify authentication settings, and test security headers. VAS catches all of these automatically.
Are Base44 security issues fixable?
Yes, nearly all Base44 security issues are configuration problems with straightforward fixes. Missing RLS, exposed secrets, weak auth—all have clear remediation steps. Most fixes take under an hour to implement.
How quickly can Base44 security issues be exploited?
Exposed databases and API keys can be discovered within minutes using automated scanners. Attackers actively scan for common patterns. This is why security configuration must happen before deployment, not after.
Does Base44 have built-in security?
Base44 provides security features, but they require configuration. Security isn't automatic—you must enable database access controls, manage secrets properly, configure auth settings, and add security headers. The tools exist; you must use them.
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Last updated: January 16, 2026