Is your v0 app production-ready?

Platform-aware security audit for apps built with v0 by Vercel. What it covers, what it typically finds, and how to run one in 30 seconds.

What a v0 security audit covers

Every v0 audit covers four dimensions — the same four we check on any live app. For v0 builds specifically, Security and Monitoring are where the most actionable findings concentrate.

1. Security (highest risk for v0 apps)

• Secrets exposed to the client: keys mistakenly prefixed NEXT_PUBLIC_ or referenced in client components are shipped in the browser bundle. CWE-312.
• Unprotected route handlers & Server Actions: App-Router API routes and Server Actions generated without authorization checks let anyone invoke them directly. OWASP A01:2021.
• Rate limiting on API endpoints: auth and AI-backed routes are brute-forceable/abusable without it. OWASP A04:2021.
• HTTP security headers: CSP, X-Frame-Options, X-Content-Type-Options, HSTS — often unset unless explicitly added to next.config or middleware.
• Dependency CVEs: package versions pulled at generation time may carry known vulnerabilities. CWE-1395.

2. Reliability

• Uncaught exceptions exposing stack traces or internal file paths to end users
• Unhandled promise rejections in async operations that can crash the server
• No graceful degradation when a third-party service (payments, LLM API, database) is down
• Race conditions in concurrent operations

3. Performance

• N+1 query patterns that work at 100 users and fail at 10,000
• Missing indexes on frequently filtered or joined columns
• Synchronous blocking work on the event loop
• Oversized client bundles from unused imports

4. Monitoring

• Error tracking absent — you learn about failures from users, not alerts
• No uptime monitoring configured
• No alerting on auth anomalies or payment failures
• No structured logging for production incident debugging

v0-specific patterns we check

v0 excels at UI generation, so the front-end is usually clean — the risk lives in the data/API layer it scaffolds and in what gets marked public.

None of these are flaws in v0 itself — they are standard production-hardening steps that require explicit decisions after code generation.

What an LRC v0 audit finds, in numbers

Based on AI-built apps scanned through launchreadycode.com and published research:

How to run a v0 security audit

Option 1 — Free scan (URL-based, 30 seconds)

Paste your live URL at launchreadycode.com. No code access, no signup. You get a Launch Readiness Score /100 across all four dimensions plus the top findings.

Option 2 — Full audit report ($499 one-time)

The Launch Readiness Audit Report covers every finding with CVSS v3 severity, file references where applicable, and specific recommended fixes — delivered in under 2 minutes.

Option 3 — Prove it with a real pen test (Exploit Proof)

A scan finds where you're weak. Exploit Proof tries to actually break in — an authorized 72-hour penetration test where you pay $297 only if we confirm a breach, and $0 (plus a signed certificate) if we can't.

Pre-launch security checklist for v0 apps

1. Run npm audit (or pip-audit) and resolve all high/critical CVEs; enable automated dependency scanning.
2. Add rate-limiting middleware on every auth route and any AI-backed or payment endpoint.
3. Configure error tracking (e.g. Sentry) and wire it to production before go-live.
4. Set HTTP security headers: Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Strict-Transport-Security.
5. Add CSRF protection on every state-changing route.
6. Audit environment variables — confirm no secret appears in client-side code or version-control history.

Frequently asked questions

Is v0 secure?

v0 produces high-quality React/Next.js code, especially UI. The security gaps we see are in the API and auth layer: secrets marked public, route handlers without authorization, and missing rate limiting. All are standard hardening steps, fixable once identified.

What does a v0 security audit check?

Four dimensions: Security (exposed keys, authorization on route handlers/Server Actions, rate limiting, headers, CVEs), Reliability (error handling, graceful degradation), Performance (N+1 queries, bundle size), and Monitoring (error tracking, uptime, alerting). Methodology: OWASP Top 10, CWE Top 25, CVSS v3.

Do you need code access to audit a v0 app?

No. The scanner is URL-based — it tests what your live app exposes publicly, which is where attackers start. Paste your live URL and get a score in 30 seconds.

How much does a v0 security audit cost?

A free Launch Readiness Score is available at launchreadycode.com. The full audit report is $499 one-time; monitoring starts at $149/month. To prove exploitability with a real pen test, Exploit Proof charges $297 only on a confirmed breach.

How is this different from a Lovable or Cursor audit?

The four dimensions and methodology are identical — the platform-specific checks differ. See also: Cursor security audit · Lovable security audit.

Sources: OWASP Top 10 2021; CWE Top 25 2024; CVSS v3; NVD CVE database; Veracode 2025 GenAI Code Security Report. General security guidance, not a certification or guarantee. v0 is a product of Vercel.