# Body Parser Middleware in Express.js

- ID: javascript-express-body-parser
- Severity: MEDIUM
- Languages: JavaScript, TypeScript
- Frameworks: express

## Description

Detects missing body parser middleware required for processing request bodies in Express.js.

## Detection Message

Application lacks body parser middleware (express.json/express.urlencoded). Without this, req.body will be undefined causing POST/PUT/PATCH endpoints to fail, and request size limits cannot be enforced enabling DoS attacks. Add: app.use(express.json({ limit: '10mb' }))

## Remediation

Add body parser middleware to process request bodies.
Example: app.use(express.json({ limit: '10mb' }));

## Documentation

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## Related Rules

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