[Bug] ERR_OSSL_EVP_UNSUPPORTED on Node 20 LTS and critical audit vulnerabilities

[toanbui-tech]

Describe the bug

When creating a new React application using create-react-app or running an existing one on modern Node.js versions (Node.js 17+, including Node 20 LTS and Node 22 LTS), the build process and development server crash immediately. This is caused by react-scripts relying on Webpack 5 configurations that use the OpenSSL 1.1.1 MD4 algorithm, which is entirely unsupported in OpenSSL 3.0 (the default in modern Node.js runtimes).

Did you try recovering your dependencies?

Yes. I deleted node_modules, package-lock.json, and ran a fresh npm install. The issue persists because it is an incompatibility between the locked dependencies in react-scripts@5.0.1 and the current Node.js runtime environment.

Output of npm --version:
10.2.4

Which terms did you search for in User Guide?

ERR_OSSL_EVP_UNSUPPORTED, OpenSSL 3.0, Node 20, Webpack hash

Environment

Environment Info:

  current version of create-react-app: 5.0.1
  running from C:\Users\Admin\AppData\Local\npm-cache\_npx\...\node_modules\create-react-app

  System:
    OS: Windows 11 / macOS (Cross-platform issue)
    CPU: (any)
  Binaries:
    Node: 20.11.1 - /usr/local/bin/node
    Yarn: Not Found
    npm: 10.2.4 - /usr/local/bin/npm
  Browsers:
    Chrome: 122.0.0.0
    Edge: Not Found
    Safari: Not Found
  npmPackages:
    react: ^18.2.0 => 18.2.0 
    react-dom: ^18.2.0 => 18.2.0 
    react-scripts: 5.0.1 => 5.0.1 
  npmGlobalPackages:
    create-react-app: Not Found

Steps to reproduce

1. Install Node.js v20.x or higher on your machine.
2. Run the bootstrap command: npx create-react-app my-app
3. Navigate into the directory: cd my-app
4. Run the development server: npm start (or npm run build)

Expected behavior

The development server should compile successfully and open the React application on http://localhost:3000/ without throwing any cryptographic errors.

Actual behavior

The script crashes instantly and throws the following OpenSSL error in the terminal. No browser window is opened.

Starting the development server...

Error: error:0308010C:digital envelope routines::unsupported
    at new Hash (node:internal/crypto/hash:71:19)
    at Object.createHash (node:crypto:133:10)
    at module.exports (...\my-app\node_modules\webpack\lib\util\createHash.js:135:53)
    at NormalModule._initBuildHash (...\my-app\node_modules\webpack\lib\NormalModule.js:817:16)
    at handleParseError (...\my-app\node_modules\webpack\lib\NormalModule.js:471:10)
    ...

Reproducible demo

This issue does not require a specific repository to reproduce. It can be reproduced with a completely fresh installation of Create React App out-of-the-box on any machine running Node 20+.

Steps:
npx create-react-app demo-app && cd demo-app && npm start

Workaround: Currently, the only way to bypass this is by passing the legacy OpenSSL provider flag to Node before running the script: NODE_OPTIONS=--openssl-legacy-provider npm start.

[Giachasidis]

@toanbui-tech This issue occurs because react-scripts@5.0.1 uses Webpack 5 with a default hash algorithm (MD4) that OpenSSL 3.0 (used in Node.js 17+) no longer supports. create-react-app is no longer actively maintained and will not receive a fix.

The only solutions are:

1. Use the legacy OpenSSL provider flag:

   NODE_OPTIONS=--openssl-legacy-provider npm start
   

2. Downgrade to Node.js 16 (which uses OpenSSL 1.1.1).

3. Migrate to a modern alternative: Vite, Next.js, Remix, or Parcel.

The long-term fix is to stop using create-react-app. The repository is archived, and no further updates are expected.