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HIGH severity

CVE-2019-5417 — serve

HIGH

CVE-2019-5417 is a high-severity (CVSS 7.5) Path Traversal vulnerability in serve. 1 public exploit reference exists, so weaponization risk is real. A fix is available for serve — see the affected versions and patch details below.

Directory Traversal in serve

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 19, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs83th percentile — riskier than 83% of all scored CVEsHighest risk
0.11%1.00%1.88%2.77%0.6%2.3%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2019-5417 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 394,803 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

827other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
servenpm
2.3Mdownloads / week

Description

Versions of serve before 7.1.3 are vulnerable to Directory Traversal. File paths are not sanitized leading to unauthorized access of system files.

Recommendation

Upgrade to version 7.1.3 or later

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmserveall versions7.1.3npm install serve@7.1.3

Affected Products

1 product · 1 configurations
Application
servezeit
≥ 7.0.1 && < 7.3.1
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

A path traversal vulnerability in serve npm package version 7.0.1 allows…

hackerone.comNVDMar 2019

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for serve, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update serve to 7.1.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-5417 is resolved across your whole dependency graph.

  3. Workarounds

    Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

Versions of `serve` before 7.1.3 are vulnerable to Directory Traversal. File paths are not sanitized leading to unauthorized access of system files. ## Recommendation Upgrade to version 7.1.3 or later
O3 Security · Impact-Aware SCA

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CVE-2019-5417: serve Path Traversal — Fixed in 7.1.3