Can v0.dev apps be hacked?

v0.dev-Specific Attack Vectors

These are the paths attackers actually take into v0.dev applications — not a generic OWASP list, but what automated scanners and security researchers find when they look at v0.dev apps specifically, given the stack (Supabase (Postgres + RLS) as the database):

1. **XSS via dangerouslySetInnerHTML**: AI may suggest React patterns that render unsanitized user content.

2. **Missing Input Validation**: v0 generates UI but not server-side validation logic.

3. **Placeholder API Calls**: Generated code may include placeholder URLs or fake endpoints.

4. **Client-Side Auth Patterns**: UI-only auth flows that can be bypassed.

5. **Outdated Dependencies**: Suggested packages may have known vulnerabilities.

**Supabase-Specific Risk**: v0.dev apps typically ship with the public Supabase anon key embedded in frontend code. That is by design — but only works safely if Row Level Security is enabled on every table. Attackers routinely query Supabase endpoints directly using the anon key from your bundle. A single table without RLS is a full data leak.

How these issues get discovered

This isn't targeted — automated scanners run across the entire internet looking for known patterns, and v0.dev apps surface like everything else. Supabase URLs follow a predictable pattern (`*.supabase.co`), making v0.dev apps easy to fingerprint. Once identified, the scanner probes the specific vulnerability classes listed above.

What a security scan of a v0.dev app looks at

• **XSS Prevention** — Checks generated components for proper escaping and sanitization of user input and dynamic content.
• **Secret Detection** — Scans for any API keys or secrets that may have been included in generated code examples.
• **Security Headers** — Verifies your deployed app has proper security headers configured.
• **Auth Patterns** — Reviews authentication and authorization patterns in generated code for common security issues.