CVE-2021-44906 — Prototype Pollution in Minimist

CWE-1321 — Prototype Pollution7 documents6 sources
Severity
9.8CRITICALNVD
EPSS
0.9%
top 24.58%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Substack MinimistDebian Node-minimist
Timeline
PublishedMar 17
Latest updateOct 20

Description

Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages3 packages

▶NVDsubstack/minimist< 1.2.6
▶npmsubstack/minimist1.0.0 — 1.2.6+1
▶debiandebian/node-minimist< node-minimist 1.2.6+~cs5.3.2-1 (bookworm)

Patches

Patch: github.com ↗Patch: snyk.io ↗Patch: github.com ↗

🔴Vulnerability Details

3
GHSA
Prototype Pollution in minimist↗2022-03-18
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OSV
Prototype Pollution in minimist↗2022-03-18
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OSV
CVE-2021-44906: Minimist <=1↗2022-03-17
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📋Vendor Advisories

2
Red Hat
minimist: prototype pollution↗2022-03-10
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Debian
CVE-2021-44906: node-minimist - Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, functio...↗2021
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📄Research Papers

1
arXiv
The Hidden Dangers of Public Serverless Repositories: An Empirical Security Assessment↗2025-10-20
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CVE-2021-44906 — Prototype Pollution in Minimist | cvebase