Free Cursor Security Scanner - Find Vulnerabilities in 60 Seconds

Test Your Cursor Project Now

Enter your deployed app URL to check for security vulnerabilities in Cursor-generated code.

Cursor’s Composer can edit dozens of files in one operation. Without review, a single AI-generated change can introduce vulnerabilities across the codebase.

The Speed-Security Trade-off in Cursor

Composer’s multi-file edits and agent mode’s autonomous coding let you ship features in a day that used to take a week. The cost is review time.

When Composer rewrites several files at once, it is easy to miss a hardcoded secret in a config file or a validation check removed during a refactor. Agent mode can run terminal commands and modify your project on its own, so unreviewed output is a real risk.

Cursor-Specific Security Risks

Generic scanners miss several patterns that Cursor workflows produce:

• Multi-file Composer edits: One operation can touch 10+ files, which makes inconsistent security patterns easy to introduce.
• Hardcoded secrets: Models sometimes write placeholder API keys or database credentials into source files instead of environment variables.
• Missing input validation: Generated endpoints and forms often skip sanitization, which opens the door to injection.
• Outdated dependencies: Cursor may suggest old or vulnerable packages when adding functionality.

Issues We See in Cursor Projects

Exposed API Keys

Composer often places API keys directly in source files instead of referencing .env variables.

Auth Bypass in Multi-file Edits

When auth logic is refactored across files, Composer can remove middleware checks.

Insecure Defaults

Generated CORS configs, cookie settings, and session parameters often use permissive defaults.

Unvalidated User Input

AI-generated form handlers and API routes often skip input sanitization.

How the Cursor Security Scanner Works

1. Automated Discovery: We crawl your deployed application to map its routes and API endpoints.
2. AI-Powered Testing: 13 specialized AI agents test attack scenarios tailored to AI-generated code patterns.
3. Vulnerability Detection: We look for issues from exposed secrets to authentication bypasses.
4. Actionable Reports: Each issue comes with specific steps to fix it in Cursor.

Best Practices for Secure Cursor Development

• Review Composer diffs: Check each file in a multi-file change for security implications before accepting.
• Use .cursorrules for security: Add security guidelines to your project’s .cursorrules file so Cursor follows them by default.
• Enable privacy mode: For projects with sensitive data, use Cursor’s privacy mode to keep code from being sent to third parties.
• Scan before every deployment: A 60-second scan catches issues that manual review misses.
• Audit dependencies: Check the packages Cursor suggests for known vulnerabilities.

After every major Composer session, run a scan. Multi-file edits are the most likely to introduce cross-cutting issues that are hard to spot in code review.

Getting Started

Deploy your app, paste the URL above, and the scan runs with no setup or configuration. The 14-day free trial needs no card. Questions? Contact our team.