CVE-2018-7408

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-02-22 · updated 2026-06-17
Weakness: CWE-732

Description

An issue was discovered in an npm 5.7.0 2018-02-21 pre-release (marked as "next: 5.7.0" and therefore automatically installed by an "npm upgrade -g npm" command, and also announced in the vendor's blog without mention of pre-release status). It might allow local users to bypass intended filesystem access restrictions because ownerships of /etc and /usr directories are being changed unexpectedly, related to a "correctMkdir" issue.

Affected products

Npmjs Npm: 5.7.0

References

http://blog.npmjs.org/post/171169301000/v571
https://github.com/npm/npm/commit/74e149da6efe6ed89477faa81fef08eee7999ad0
https://github.com/npm/npm/issues/19883
http://blog.npmjs.org/post/171169301000/v571
https://github.com/npm/npm/commit/74e149da6efe6ed89477faa81fef08eee7999ad0
https://github.com/npm/npm/issues/19883

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