Server-only values exposed through client configuration
A secret placed behind a public environment prefix or imported into a Client Component can become readable by every visitor.
Security for v0 apps
Security checks for apps designed and built with v0
A public scan inspects the deployed response and shipped bundles. Connect source separately when you need evidence about route handlers, auth code, dependencies and values crossing into the client build.
Designed for teams taking a generated interface from preview to a production Next.js application with real users and data.
Run scans only on systems you own or are authorized to assess. Deep engines require verified authorization and may remain unavailable for a target.
report / sample findingIllustrative
Critical
Example report structure
Server credential exposed through a public environment variable
- Evidence
- A secret-shaped value associated with a public environment identifier appears in connected source or a shipped JavaScript asset; the report masks the value.
- What it means
- Values included in browser code are public regardless of whether the repository is private.
- Fix and verify
- Rotate the credential, remove the public prefix and client import, call the provider from a server-only route, redeploy and rescan the bundle.
This is an illustrative finding, not a result for your application. Live reports show the scanner, evidence state and coverage limits for the actual target.
Common risk paths
What deserves a closer look
These are risk patterns relevant to v0 projects—not claims that every project has them. A finding appears only when a scanner returns supporting evidence.
Mutation routes without resource ownership
Route handlers and Server Actions still need input validation, authentication and an explicit authorization check for the affected record.
Framework and package vulnerabilities
A polished UI can still ship an outdated Next.js or transitive dependency version with a published advisory.
Honest coverage
What each scan surface can prove
URL evidence, connected source and authorized deep engines answer different questions. BoringSec keeps those sources separate and shows partial, blocked and unavailable states instead of turning an untested surface into a pass.
Read the public methodologyDeployed web surface
Checks the public response path for TLS, security headers, DNS and email authentication, cookies, CORS, exposed files, technology signals and other externally observable controls.
Shipped JavaScript
Inspects bounded, same-origin frontend bundles for secret-shaped values and records partial coverage when an asset cannot be fetched or exceeds a safety limit.
Independent deep engines
Nuclei, OWASP ZAP and Medusa continue asynchronously only when the requested scan is authorized and the engine is available. Their running, blocked or unavailable state stays visible.
Repository context
A separately connected repository can add source-level evidence for committed secrets, auth and database risk patterns, dependency advisories and server/client boundary mistakes.
From observation to verification
A report built for the next action
- 01
Observe
Inspect the public response path and start eligible background engines.
- 02
Verify evidence
See what was observed, by which scanner and with what confidence.
- 03
Fix in context
Use a concrete remediation path and the v0-relevant context.
- 04
Retest
Run a fresh assessment; monitoring can detect later regressions separately.
Questions before you scan
Does BoringSec need access to my v0 account?
No. A live scan starts from the deployed URL and observes only the public surface. Repository access is a separate, explicit connection and is not required for the URL scan.
What can a URL-only scan prove?
It can support findings with externally observable evidence such as response headers, TLS behavior, public files, shipped bundles and bounded backend probes. It cannot prove that private source code or authenticated workflows are safe.
Does a good score mean the application is completely secure?
No automated scan can prove complete security. BoringSec reports assessed, partial, unavailable and authorization-required coverage explicitly so a clean result is not presented as evidence for surfaces that were never tested.
Is BoringSec affiliated with v0?
No. BoringSec is an independent security service and is not sponsored by, endorsed by or affiliated with v0.
Check the deployed application, then verify every fix
Start with the public URL. Add source or authenticated context only when you choose to expand coverage.
Start a security scan