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npm v12, scheduled for release in July 2026, will enforce new security defaults that disable automatic script execution and restrict dependency resolution from Git and remote URLs unless explicitly permitted. Developers are advised to prepare now by testing with npm 11.16.0+.
npm v12, set for release in July 2026, will introduce default security restrictions that disable automatic execution of scripts during package installation, affecting how dependencies are managed and requiring explicit approval from users.
The upcoming npm v12 will change default behaviors related to security. Notably, npm install will no longer run preinstall, install, or postinstall scripts from dependencies unless explicitly permitted by the user. This change applies to scripts from git, file, and link dependencies, which will be blocked unless approved via new commands such as npm approve-scripts.
Additionally, npm v12 will restrict resolution of Git dependencies and dependencies from remote URLs by default. Users will need to explicitly allow these sources using command-line flags like –allow-git and –allow-remote. These changes are currently available behind warnings in npm 11.16.0+ and are intended to improve security by reducing automatic code execution and dependency risks.
Developers are advised to test their workflows with npm 11.16.0 or later, review warnings, and prepare to approve trusted scripts before upgrading to v12. The process involves running npm approve-scripts to whitelist safe scripts and committing the updated package.json files.
Security Enhancements in npm v12
These changes are significant because they reduce the risk of malicious code executing automatically during package installation, a common vector for supply chain attacks. By requiring explicit approval for scripts and dependency sources, npm aims to strengthen security, especially for projects relying on third-party packages from various sources.
However, these restrictions may impact development workflows, especially for projects with automated build processes or dependencies from Git and remote URLs. Developers will need to adapt their workflows and document approved scripts carefully to avoid disruptions.
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Background on npm Security Changes
npm has gradually introduced security improvements over recent versions, including warnings for script execution and dependency resolution issues. The upcoming v12 release consolidates these changes into default behaviors to enhance safety. The changes were first announced in February 2026 and are now available for testing in npm 11.16.0+.
Previous versions allowed automatic script execution, which could be exploited if dependencies contained malicious scripts. The new defaults aim to mitigate this risk by requiring explicit user approval and limiting dependency sources.
“The default restrictions in npm v12 represent a significant step forward in dependency security, but they will require developers to review and approve scripts proactively.”
— an anonymous researcher
“Our goal with these changes is to make npm safer by default, reducing automatic code execution risks while giving users control over what runs during install.”
— npm team
Unresolved Details About npm v12 Adoption
It is not yet clear how quickly the broader developer community will adopt these changes or how many existing projects might face disruptions. Specific workflows that depend on automatic scripts or remote dependencies may require significant adjustments. Further updates from npm are expected as the release approaches, but detailed guidance on handling edge cases remains to be seen.
Preparing for npm v12 Release and Transition
Developers should begin testing their projects with npm 11.16.0+ to identify scripts and dependencies that will be affected. Running npm approve-scripts --allow-scripts-pending will help review and whitelist trusted scripts. The npm team will likely release detailed documentation and migration guides closer to the July 2026 release. Monitoring community feedback and testing workflows will be essential for a smooth transition.
Key Questions
When will npm v12 be released?
npm v12 is scheduled for release in July 2026, with earlier versions available for testing in npm 11.16.0+.
How can I prepare for these changes?
Test your projects with npm 11.16.0 or later, review warnings, and use npm approve-scripts to whitelist trusted scripts. Update your workflows accordingly before upgrading to v12.
Will existing projects be affected immediately?
Existing projects using automatic scripts or dependencies from Git and remote URLs may experience disruptions unless they explicitly approve scripts and sources. Planning ahead is recommended.
Are there any exceptions to these new defaults?
The defaults for –allow-git and –allow-remote are set to none, but users can explicitly permit these sources via command-line flags or configuration, maintaining flexibility for advanced workflows.
Where can I find more information?
Official documentation on npm approve-scripts, npm deny-scripts, and related configuration options is available on the npm website, with further updates expected as the release date nears.
Source: Hacker News
