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CRITICAL severity

CVE-2020-28447 — xopen

CRITICAL

CVE-2020-28447 is a critical-severity (CVSS 9.8) CWE-77 vulnerability in xopen. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

xopen is vulnerable to OS Command Injection in Exported Function xopen(filepath)

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

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk+0.04%
Lower risk than most CVEs71th percentile — riskier than 71% of all scored CVEsHighest risk
0.01%0.62%1.22%1.83%0.5%1.3%May 26Aug 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

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.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
xopennpm
48downloads / week

Description

A command injection vulnerability affects all versions of package xopen. The injection point is located in line 14 in index.js in the exported function xopen(filepath).

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmxopenall versionsNo fix

Affected Products

1 product · 1 configurations
Application
xopenxopen_project
all
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.

This affects all versions of package xopen. The injection point is locat…

security.snyk.ioNVDAug 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Remediation status

    The records we use list no patched version of xopen for CVE-2020-28447. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

A command injection vulnerability affects all versions of package xopen. The injection point is located in line 14 in index.js in the exported function `xopen(filepath)`.
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CVE-2020-28447: xopen Command Injection (Critical 9.8)