# CORS Configuration in Express.js

- ID: javascript-express-cors-configuration
- Severity: MEDIUM
- Languages: JavaScript, TypeScript
- Frameworks: express, fastify

## Description

Detects overly permissive CORS configuration allowing any origin to access resources.

## Detection Message

Application has overly permissive CORS configuration: {details}

## Remediation

Configure CORS to allow only trusted origins.
Avoid using wildcard (*) for authenticated endpoints.

## Documentation

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## Related Rules

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