Directory Traversal in serve

MEDIUM 6.5CVE-2018-3712 · GHSA-q2qh-cgc2-qhr3 · Published 07/06/2018 · updated 17/06/2026

Package	Affected versions	Patched versions
serve zeit	`< 6.4.9`	`6.4.9`
serve npm	`< 6.4.9`	`6.4.9`

Description

Affected versions of serve do not properly handle %2e (.) and %2f (/) characters, and allow the, characters to be used in paths. This can be used to traverse the directory tree and list content of any directory the user running the process has access to.

Mitigating factors: This vulnerability only allows listing of directory contents and does not allow reading of arbitrary files.

Recommendation

Update to version 6.4.9 later.

NVD description

serve node module before 6.4.9 suffers from a Path Traversal vulnerability due to not handling %2e (.) and %2f (/) and allowing them in paths, which allows a malicious user to view the contents of any directory with known path.

References

nvd.nist.gov/vuln/detail/CVE-2018-3712 · ADVISORY
zeit/serve#316 · WEB
vercel/serve commit 6adad68 · WEB
hackerone.com/reports/307666 · WEB
vercel/serve · PACKAGE

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