CVE-2021-44906

CRITICAL

Minimist <=1.2.5 - Prototype Pollution via setKey Function

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-44906. PoCs published by nevermoe.

AI-analyzed exploit summary This PoC demonstrates a prototype pollution vulnerability in the minimist library (CVE-2021-44906), where the `Function.prototype` is polluted via the `constructor` property, bypassing previous fixes. The exploit modifies the `done` property of all functions, affecting their behavior.

Description

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

Exploits (1)

nomisec WORKING POC
by nevermoe · poc
https://github.com/nevermoe/CVE-2021-44906

This PoC demonstrates a prototype pollution vulnerability in the minimist library (CVE-2021-44906), where the `Function.prototype` is polluted via the `constructor` property, bypassing previous fixes. The exploit modifies the `done` property of all functions, affecting their behavior.

Classification
Working Poc 95%
Attack Type
Other
Complexity
Moderate
Reliability
Reliable
Target: minimist v1.2.5
No auth needed
Prerequisites: Node.js environment · minimist library installed
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Scores

CVSS v3 9.8
EPSS 0.0079
EPSS Percentile 74.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-1321
Status published
Products (2)
npm/minimist 1.0.0 - 1.2.6npm
substack/minimist < 1.2.6
Published Mar 17, 2022
Tracked Since Feb 18, 2026