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CRITICAL severity

CVE-2020-28439 — corenlp-js-prefab

CRITICAL

CVE-2020-28439 is a critical-severity (CVSS 9.8) OS Command Injection vulnerability in corenlp-js-prefab. No vendor fix is recorded yet; mitigation options are listed below.

Command injection in corenlp-js-prefab

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Oct 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.6%probability of exploitation in next 30 days
Lower Risk+0.02%
Lower risk than most CVEs75th percentile — riskier than 75% of all scored CVEsHighest risk
0.01%0.71%1.40%2.09%0.5%1.6%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2020-28439 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 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, a proxy for how much of the ecosystem is exposed.

corenlp-js-prefabnpm
0downloads / week

Description

This affects all versions of package corenlp-js-prefab. The injection point is located in line 10 in 'index.js.' It depends on a vulnerable package 'corenlp-js-interface.' Vulnerability can be exploited with the following PoC:

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmcorenlp-js-prefaball versionsNo fix

Affected Products

1 product · 1 configurations
Application
corenlp-js-prefabcorenlp-js-prefab_project
all

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Remediation status

    No patched version of corenlp-js-prefab has shipped for CVE-2020-28439 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  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

This affects all versions of package corenlp-js-prefab. The injection point is located in line 10 in 'index.js.' It depends on a vulnerable package 'corenlp-js-interface.'
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CVE-2020-28439: corenlp-js-prefab: Command injection