Error: error:0308010C:digital envelope routines::unsupported
at new Hash (node:internal/crypto/hash:67:19)

Node.js 17+ uses OpenSSL 3.0, which removed support for some older algorithms. Your build tool (Webpack, Create React App, etc.) is using one of them.

Fix 1: Use the Legacy OpenSSL Provider

# Set the environment variable
export NODE_OPTIONS=--openssl-legacy-provider

# Or inline
NODE_OPTIONS=--openssl-legacy-provider npm run build

// package.json — add to scripts
{
  "scripts": {
    "build": "NODE_OPTIONS=--openssl-legacy-provider react-scripts build",
    "start": "NODE_OPTIONS=--openssl-legacy-provider react-scripts start"
  }
}

Fix 2: Downgrade Node.js

# Use Node.js 16 (LTS with OpenSSL 1.1)
nvm install 16
nvm use 16
npm run build

Fix 3: Upgrade Your Build Tool

The real fix — update to a version that supports OpenSSL 3.0:

# Create React App
npm install react-scripts@latest

# Webpack
npm install webpack@latest

# Or migrate to Vite (no OpenSSL dependency)

Fix 4: Windows

# PowerShell
$env:NODE_OPTIONS="--openssl-legacy-provider"
npm run build

# Or in package.json
"build": "set NODE_OPTIONS=--openssl-legacy-provider && react-scripts build"

Fix 5: Docker

ENV NODE_OPTIONS=--openssl-legacy-provider
RUN npm run build

Why This Happens

Node.js 17+ ships with OpenSSL 3.0, which deprecated the MD4 algorithm used by Webpack’s hashing. Older versions of Webpack, Create React App, and other tools rely on this algorithm.

Related resources

• Cannot find module fix
• Build failed fix
• What is Vite?