> For the complete documentation index, see [llms.txt](https://docs.sec1.io/user-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sec1.io/user-docs/4-sast/3-javascript/missing-helmet-configuration-on-http-headers.md).

# Missing Helmet configuration on HTTP headers

## Overview

* **Rule ID**: `javascript_express_helmet_missing`
* **Applicable Languages**: Javascript
* **Weakness ID**: CWE-693

## Description

Helmet can help protect your app from well-known web vulnerabilities by setting HTTP headers appropriately. Failing to configure Helmet for HTTP headers leaves your application exposed to various web attacks.

## Remediation Guidelines

* **Do use** Helmet middleware to secure your app by adding it to your application's middleware.

  ```java
  const helmet = require("helmet");
  app.use(helmet());
  ```

## References

* [**Express Security Best Practices: Use Helmet**](https://expressjs.com/en/advanced/best-practice-security.html#use-helmet)
* [**CWE-693: Protection Mechanism Failure**](https://cwe.mitre.org/data/definitions/693.html)

## Configuration

To omit this rule during a scan, and to provide you with continuous 24/7 code-level scanning, you can employ our [**SAST TOOL**](https://scopy.sec1.io/login)