# Echo Permissive CORS

- ID: go-echo-permissive-cors
- Severity: MEDIUM
- CWE: CWE-942 (CWE-942)
- Languages: Go
- Frameworks: echo

## Description

Wildcard CORS allows any origin to access resources.

## Remediation

Specify allowed origins instead of wildcard.

```go
e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
    AllowOrigins: []string{
        "https://example.com",
        "https://app.example.com",
    },
}))
```

Learn more: https://shoulder.dev/learn/go/cwe-942/cors

## Related Rules

- **FastAPI CORS Misconfiguration** [MEDIUM]: 
- **Flask CORS Misconfiguration** [MEDIUM]: 
- **Chi Permissive CORS** [MEDIUM]: 
- **Fiber Permissive CORS** [MEDIUM]: 
- **Gin Permissive CORS** [MEDIUM]: