Severity: low

Global node_modules Binary Overwrite



Versions of the npm CLI prior to 6.13.4 are vulnerable to a Global node_modules Binary Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations.

For example, if a package was installed globally and created a serve binary, any subsequent installs of packages that also create a serve binary would overwrite the first binary. This will not overwrite system binaries but only binaries put into the global node_modules directory.

This behavior is still allowed in local installations and also through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.


Upgrade to version 6.13.4 or later.


Have content suggestions? Send them to [email protected]

Advisory timeline

  1. published

    Advisory Published
    Dec 12th, 2019
  2. reported

    Reported by Daniel Ruf
    Dec 11th, 2019