Secrets crossing the server/client boundary
Generated code can accidentally expose server credentials through frontend configuration, bundles or committed environment files.
Security for Cursor-built apps
A security review loop for apps built in Cursor
Scan what users can reach now, then add repository context when you need source-level coverage. Findings retain their evidence, confidence and scanner availability instead of collapsing into an unexplained score.
Use it after agent-driven refactors, authentication changes, dependency upgrades and before a production release.
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
High
Example report structure
Session token stored in browser storage
- Evidence
- Connected source analysis identifies code that writes a session or auth token through localStorage or sessionStorage.
- What it means
- Browser storage is accessible to JavaScript, so an XSS path can exfiltrate the token. This source signal still needs developer review in context.
- Fix and verify
- Move session state to server-set Secure, HttpOnly cookies, review token lifetime and logout behavior, then verify the deployed cookie flags.
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 Cursor projects—not claims that every project has them. A finding appears only when a scanner returns supporting evidence.
Authentication mistaken for authorization
A valid session is not enough when mutations and records are not constrained to the current owner on the server.
Dependencies copied without a security review
Fast iteration can preserve stale packages or vulnerable versions long after the generated feature appears to work.
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 Cursor-relevant context.
- 04
Retest
Run a fresh assessment; monitoring can detect later regressions separately.
Questions before you scan
Does BoringSec need access to my Cursor 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 Cursor?
No. BoringSec is an independent security service and is not sponsored by, endorsed by or affiliated with Cursor.
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