Free v0 security scanner
v0 generates polished Next.js apps that deploy to Vercel in one click. The same speed that makes it great makes it easy to ship a NEXT_PUBLIC_ variable that should never have left the server.
What we check on v0 apps
Typical stack: Next.js on Vercel, often with Supabase or Neon
Next.js inlines every NEXT_PUBLIC_ variable into client JavaScript at build time. VibeShield finds real secret keys in your bundles and in page data like __NEXT_DATA__.
Your Supabase anon key ships to every visitor by design — that's fine only if Row Level Security is on. With RLS off, anyone can copy the key from the network tab and download every row. VibeShield checks each exposed table's row count (never the data itself).
An API route that reflects any Origin while allowing credentials lets other websites act as your logged-in users. VibeShield tests for exactly that combination.
No Content-Security-Policy, HSTS or clickjacking protection means one injected script or a framing attack goes unchecked. VibeShield tells you which headers are missing and what to set.
Found something? Fix it in v0.
- Scan your live URL in seconds — no signup for the first security scan
- Signed-in scans cover security, accessibility, SEO & AEO, and bundle in one report
- Every issue explained in plain English, ranked by what to fix first
- A copy-paste prompt that fixes each issue in the tool you built with
Want it watched for you? Pro adds weekly schedules, email alerts, and active attack checks. Business adds deploy webhooks, daily schedules, Slack/Discord, and GitHub scanning.