How to Secure a Vibe-Coded App for Production

The security issues AI coding tools miss - and how to fix them before you have real users.

AI coding tools produce code that works. They do not produce code that is secure. The most common security issues in vibe-coded apps: hardcoded API keys in the codebase, missing authentication on API endpoints, no input validation, and vulnerable dependencies nobody has audited. This guide covers the security fixes that must happen before you handle real user data.

No fluff. Production-grade answers from engineers who ship AI into real products.

The Security Issues Found in Every Vibe-Coded Codebase

Our Valletta.Rescue audit has reviewed dozens of vibe-coded codebases. The findings are consistent: hardcoded secrets (API keys credentials database URLs in the code or git history), missing authentication on internal endpoints, SQL injection via string interpolation, XSS via unsanitized output, and npm or pip dependencies with known CVEs. None of these are AI bugs - they are the inevitable result of prototyping without a security review.

At Valletta.Software, we focus on:

Secrets audit: grep codebase and git history for hardcoded credentials - rotate anything found

Auth review: verify every endpoint requires authentication - unauthenticated endpoints are a CVSS 9+

Input validation: validate and sanitize all user input before use in queries or output

Dependency audit: npm audit or pip-audit - fix CRITICAL and HIGH CVEs before production

HTTPS only: redirect all HTTP to HTTPS - HSTS header with 1-year max-age

Security headers: CSP X-Frame-Options X-Content-Type-Options - one middleware handles all

Rate limiting: per-IP limits on auth endpoints - prevent credential stuffing attacks

The OWASP Top 10 Checks for Vibe-Coded Apps

These are the vulnerabilities attackers look for first. Check them before launch.

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Injection: parameterized queries or ORM - never string interpolation in SQL

Broken auth: JWT properly validated on every protected route - not just checked on login

Sensitive data: passwords hashed with bcrypt or argon2 - not MD5 not plaintext

XXE: disable XML external entity processing if parsing XML

Broken access control: check authorization not just authentication - can user A see user B data

Security misconfiguration: no debug mode in production no default admin passwords no directory listing

Vulnerable components: automated dependency scanning in CI - fail build on CRITICAL CVE

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Audit My Codebase First - $199

Set up production infra - CI/CD, Docker, Kubernetes, monitoring - from day one

Ship 3x faster with AI-native tooling and vibe-to-production methodology

Deploy properly - not just Vercel free tier - with autoscaling and observability

Audit your vibe-coded codebase and remediate before production incidents

How to Secure a Vibe-Coded App - With Engineers Who Find the Issues Before Attackers Do

Lets keep it simple.

Our engineers use Cursor, Claude Code, and AI-native tooling daily - not just to build AI products, but to ship them to production, maintain them, and scale them.

Lets keep it simple.

Our Valletta.Rescue audit covers security as a core component: authentication review input validation dependency CVE audit secrets scan and OWASP Top 10 checks. We have found critical vulnerabilities in every vibe-coded codebase we have audited.

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