Express.js Security Posture
Express.js Security Overview
Express.js lacks built-in security defaults. Developers must implement middleware like Helmet for security headers, CORS for origin control, and explicit rate limiting to prevent application abuse.
Security Checks
Security Headers (fail)
No default security headers. Requires the 'helmet' middleware to set HSTS, CSP, and remove the X-Powered-By header.
CORS (warn)
Cross-Origin Resource Sharing is permissive by default. Requires the 'cors' middleware with explicit origin restrictions.
Rate Limiting (fail)
No default rate limiting. Requires external middleware like 'express-rate-limit' to mitigate brute force attacks.
These technical checks are informational heuristics, not a guarantee of security or compliance. Passing a scan does not guarantee protection against zero-days or application logic flaws. Always conduct independent professional audits.