---
title: Avoid weak hash algorithm from CryptoJS
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: >-
  Docs > Datadog Security > Code Security > Static Code Analysis (SAST) > SAST
  Rules > Avoid weak hash algorithm from CryptoJS
---

# Avoid weak hash algorithm from CryptoJS

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## Metadata{% #metadata %}

**ID:** `javascript-node-security/crypto-avoid-weak-hash`

**Language:** JavaScript

**Severity:** Warning

**Category:** Security

**CWE**: [328](https://cwe.mitre.org/data/definitions/328.html)

**Related CWEs**:

- [916](https://cwe.mitre.org/data/definitions/916.html)

## Description{% #description %}

Use of insecure hash functions like MD5 or SHA1 can expose your application to vulnerabilities.

#### Learn More{% #learn-more %}

- [JS Crypto Library](https://cryptojs.gitbook.io/docs/#hashing)

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```javascript
var hash = CryptoJS.MD5("Message", "Secret Passphrase");
var hash = CryptoJS.SHA1("Message", "Secret Passphrase");
var hash = CryptoJS.HmacMD5("Message", "Secret Passphrase");
```

## Compliant Code Examples{% #compliant-code-examples %}

```javascript
// Safe: using SHA256 instead of MD5/SHA1
var hash = CryptoJS.SHA256("Message");
var hmac = CryptoJS.HmacSHA256("Message", "Secret Passphrase");
```
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