Security Scanner for
v0.dev-Generated Apps
v0.dev generates beautiful Next.js UIs fast. SecuriSky checks that the deployed app is secure, performant, and conversion-ready. Paste your URL — results in under 2 minutes. No source code required.
No signup required for your first scan. No source code access needed.
4 issues commonly found in v0.dev-deployed apps
Missing Security Headers on Vercel
v0.dev generates Next.js components and deploys to Vercel. But Vercel doesn't automatically add CSP, HSTS, X-Frame-Options, or Permissions-Policy headers. Without them, your app is vulnerable to XSS, clickjacking, and protocol downgrade attacks.
API Keys Exposed in Client Components
v0.dev uses React Server Components by default, but generated client components can reference environment variables that get bundled into the public JavaScript. SecuriSky detects keys in your live JS bundle.
Supabase / Firebase Data Exposed
v0 apps commonly integrate with Supabase or Firebase for data. If RLS policies or Firebase Security Rules aren't configured, unauthenticated API calls can read or write your database directly.
API Routes Without Auth Guards
v0.dev generates clean Next.js API routes, but auth guards on those routes require explicit setup. SecuriSky probes your API endpoints to identify routes that respond 200 to unauthenticated requests.
How it works
Paste your deployed v0 app URL
Enter your Vercel URL, v0.dev deployment, or custom domain. No account needed for the first scan.
27 automated checks in under 2 minutes
Security headers, Supabase/Firebase data exposure, exposed API keys, open routes, performance, UX quality, SEO, and accessibility.
Prioritized findings with evidence
Critical issues first. Each finding includes exact evidence from your live app and a dollar-estimated impact on ARR.
Fix prompts for Next.js and Cursor
Copy the AI fix prompt → paste into Cursor Agent, Claude, or your v0 project chat. Fix most issues without writing code manually.
What a scan of a v0.dev app typically finds
- CRITICAL: No Content-Security-Policy header — inline scripts run without restrictions
- HIGH: Missing Strict-Transport-Security (HSTS) — allows HTTP downgrade
- HIGH: /api/user returns profile data without Authorization check (200 unauthenticated)
- MEDIUM: No accessibility landmarks — 3 missing aria-label attributes on interactive buttons
- MEDIUM: Hero CTA reads 'Get Started' — low specificity, A/B tests show 18% lower conversion vs. outcome-based copy
Common questions
Does SecuriSky need access to my v0.dev project or Next.js source code?
No. SecuriSky scans your live deployed URL — no source code, git repo, or API tokens required. Paste your Vercel deployment URL or custom domain and scan in under 2 minutes.
What security headers should a v0-generated Next.js app have?
At minimum: Content-Security-Policy (blocks XSS), Strict-Transport-Security (forces HTTPS), X-Frame-Options (blocks clickjacking), X-Content-Type-Options (blocks MIME sniffing), Permissions-Policy (limits browser APIs), and Referrer-Policy. SecuriSky checks for all six and generates a next.config.ts headers() block as the fix prompt.
v0.dev uses Vercel — how do I add security headers?
SecuriSky's AI fix prompt for missing headers generates a Next.js next.config.ts headers() function with all required security headers. Paste it into your config file and redeploy. No manual header knowledge required.
My v0 app uses Supabase. What does SecuriSky check?
SecuriSky extracts your Supabase project URL and anon key from the compiled JavaScript bundle, then makes unauthenticated REST API requests to common table names (/rest/v1/users, /rest/v1/profiles, /rest/v1/orders, etc.). If RLS is disabled, it captures the response rows as evidence in the finding.
Can SecuriSky scan a v0.dev preview link before I go to production?
Yes. Any publicly accessible HTTPS URL works — v0.dev deployments, Vercel preview URLs, and production custom domains. Scan early, catch issues before launch.
Does SecuriSky check UX and conversion rate issues, not just security?
Yes. SecuriSky runs 27 checks across security, performance (Lighthouse, LCP, CLS), UX quality (hero clarity, CTA strength, social proof, mobile viewport), SEO, and accessibility. v0.dev apps often ship with generic hero copy and weak CTAs — SecuriSky surfaces those too.
v0 built it. SecuriSky validates it.
Free scan. No signup. Full security and UX report in under 2 minutes. Fix prompts for Next.js & Cursor included.
Scan My v0 App Now →After your free scan, Pro is $19/mo. Cancel anytime.