v0 security

Is my v0 app secure? Check its code and live site

Push your v0 project to GitHub and SafeWeave scans it on each push. v0 apps usually deploy to Vercel, so scan the Vercel URL too: SafeWeave checks the live app from the outside.

Run a free scan Create a free account

Free scan of a public GitHub repo · no signup · private repos and live apps with a free account

Why it matters

Your v0 app works. Is it locked?

v0 gets you from prompt to working app fast. The security mistakes AI builders make don’t break anything, so you won’t see them while you click around: a table anyone can read, a secret key in the browser bundle, an API route that never checks who is calling. SafeWeave looks for exactly these.

How SafeWeave Solves It

How SafeWeave checks a v0 app

No access to your v0 account needed: SafeWeave scans the GitHub repository your project syncs to.
Each push is scanned, within your plan’s monthly scan limit, so new mistakes show up when they are made.
An App URL scan checks the deployed app from the outside, the way anyone on the internet sees it.
On Cloud and Cloud Plus, every finding comes with how to fix it and a prompt you can paste back into v0.

What to watch for

Common security issues in v0 apps that SafeWeave checks

Route Handlers and Server Actions with no auth

Next.js Route Handlers that read or change data and Server Actions that write data without checking the user, inverted auth checks, and middleware matchers that skip /api.

Secrets in NEXT_PUBLIC_ variables

Next.js puts every NEXT_PUBLIC_ variable into the browser bundle. SafeWeave flags secret-looking values there, and keys visible in your live website code.

Paywalls checked only in the browser

Plan and subscription checks in a client component, plans set from what the browser sends instead of Stripe, and Stripe webhooks that don’t verify the signature.

Redirects, HTML and fetches from user input

Redirects to a URL from the query string, URL input rendered with dangerouslySetInnerHTML, and server routes that fetch any URL a caller sends.

AI routes anyone can use

Routes that call an AI model without checking who is calling or without a rate limit, and AI keys in public env vars.

Files your deployment serves

From the outside: /.vercel/project.json, /.env files, public source maps and debug pages that answer without sign-in.

Anything checked on your live app, rather than in the code, is a live app check, on Cloud and Cloud Plus. See every check in the vibe coding security checklist.

How to scan

Scan your v0 app in four steps

1
Push your v0 project to a GitHub repository you own.
2
In SafeWeave, connect GitHub if you haven’t, then go to Repositories, click Connect repository and pick that repository.
3
Click Scan now, or wait for your next change: each sync is a push, and pushes are scanned.
4
Go to App URLs, click Scan an app URL and enter your Vercel URL, for example https://myapp.vercel.app.

Full instructions: v0 in the docs. If the repository is public, you can also try a scan without an account at safeweave.dev/scan.

Code and live app

What each scan looks at

Your code, through GitHub

Connect the GitHub repository your builder syncs to. Each push is scanned, within your plan's monthly scan limit. On top of the standard scanners, 59 vibe-coded app checks look for the mistakes AI builders make with Supabase, Firebase, Next.js, Vite, Express, Stripe, AI features, Python, MCP servers and secrets.

Your live app, from its URL

An App URL scan looks at your deployed app the way anyone on the internet can: security headers, the TLS certificate, email records and exposed files. On Cloud and Cloud Plus it also runs live app checks for open tables, storage, keys and AI routes. They only read; they never change anything.

Plans

What’s free and what’s on Cloud

	Free	Cloud and Cloud Plus
Connected repositories	1	5 on Cloud, 15 on Cloud Plus
Cloud scans per repository a month	5	15 on Cloud, no limit on Cloud Plus
Vibe-coded app checks on your code	Grade and finding counts	Every finding, with how to fix it
App URL scan	Score, grade and the first findings	All findings, with how to fix them
Live app checks (open tables, storage, keys, AI routes)	No	Yes
Daily or weekly monitoring with email alerts	No	Yes
Supabase connection (RLS and security advisors)	No	Yes

Cloud is $29/month with a 14-day free trial; Cloud Plus is $59/month. See Choosing a plan.

Other builders

Built with something else?

Lovable security Bolt.new security Replit security

FAQ

Common questions

Is my v0 app secure?

Using v0 doesn’t make an app insecure on its own, but you can’t tell from using the app whether it leaves data or keys open. AI-built apps often ship the same mistakes: database tables anyone can read, secret keys in the browser and routes with no sign-in check. To find out, scan it: SafeWeave checks the code in the GitHub repository your project syncs to and the live app at its URL.

How do I check my v0 app for security issues?

Put your v0 project on GitHub, then in SafeWeave connect that repository and click Scan now; after that each push is scanned. Then scan the address your app is deployed at under App URLs. A free account covers one repository with a grade and finding counts, and an App URL scan with a score and the first findings; every finding with its fix and the live app checks are on Cloud and Cloud Plus.

Can SafeWeave scan my v0 app on Vercel?

Yes. Scan the Vercel URL as an App URL. SafeWeave checks the deployed app the way anyone on the internet can see it: security headers, the TLS certificate, email records and exposed files, plus the live app checks on Cloud and Cloud Plus. It only reads; it never changes anything.

Do I need to give SafeWeave access to my v0 or Vercel account?

No. SafeWeave scans the GitHub repository you push your v0 project to, and your deployed app at its URL.

Scan your v0 app

Paste a public GitHub repository and get a grade with ranked findings in seconds, no account needed. For a private repository or your live app, create a free account.

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Explore SafeWeave

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