CVE-2019-16777: Fedoraproject Fedora

Medium severity, CVSS 6.5. EPSS: 2.1% chance of exploitation in the next 30 days.

Versions of the npm CLI prior to 6.13.4 are vulnerable to an Arbitrary File 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 previous serve binary. This behavior is still allowed in local installations and also through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.

Affected products

• Fedoraproject Fedora: version 31 only
• Npmjs Npm: before 6.13.4 (fixed in 6.13.4)
• Opensuse Leap: version 15.1 only
• Oracle Graalvm: version 19.3.0.2 only
• Red Hat Enterprise Linux: version 8.0 only
• Red Hat Enterprise Linux Eus: version 8.1 only

Published 2019-12-13. Last modified 2026-06-17.