Introduction
In July 2026, NPM version 12 is set to launch with significant security-focused changes that could disrupt your current workflows. These changes, while necessary, require preparation on your part to avoid any disruption to your development pipeline. Let's dive into the details of the changes and see how to prepare.
Why These Changes?
Supply chain security continues to grow in importance, especially with the rise of cyberattacks targeting package dependencies. NPM v12 aims to minimize these risks by changing default behaviors, turning some automatic actions into ones that require your explicit consent.
Key Changes
1. allowScripts Default Set to "off"
Currently, when you run npm install, scripts like preinstall, install, and postinstall run automatically. With NPM v12, these scripts will no longer execute by default unless explicitly allowed. This includes native node-gyp builds. To manage these permissions, use npm approve-scripts to permit scripts from trusted packages and npm deny-scripts to block others. This requires updating your package.json.
2. --allow-git Default Set to "none"
Git dependencies will no longer be automatically resolved. You must explicitly allow them using --allow-git. This change blocks a code execution path where a Git dependency’s .npmrc could potentially override the Git executable, even with --ignore-scripts.
3. --allow-remote Default Set to "none"
Similarly, dependencies from remote URLs like HTTPS tarballs will now require explicit approval via --allow-remote. The --allow-file and --allow-directory flags remain unchanged for now.
How to Prepare?
To minimize disruptions, upgrade to NPM 11.16.0 or later and run your normal install. This will allow you to see which scripts and dependencies might be affected. Then, update your package.json to approve the necessary scripts and dependencies.
Impact on Development
These changes encourage greater transparency and control over what runs during your installs, thus reducing the risk of executing malicious code. While this might seem restrictive, it fosters more secure development practices.
Conclusion
The transition to NPM v12 is a necessary step towards better security, but it requires you to prepare your development environment. By adopting these new practices, you shield your projects from potential threats.
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