CVE•Published 2022-03-17•Modified 2026-10-08•1 article on news•6 live references•NVD data

CVE-2021-44906Substack · Minimist

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 9% of all CVEs

Weaknesses (CWE)

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Description

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

Timeline

Published 2022-03-17

Modified 2026-10-08

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2021-44906

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Substack Minimist"

All exposed Substack Minimist instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Minimist"

HTTP body or banner mentions "Minimist" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2021-44906

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2021-44906

Censys host search filtered to this CVE id.

grep.app

CVE-2021-44906

Public source-code mentions — fast PoC discovery.

GitHub code

CVE-2021-44906

GitHub code search for direct mentions.

Google dork

"CVE-2021-44906" exploit -site:nvd.nist.gov

Write-ups and news, NVD excluded.

Known PoCs on GitHub (8)

CVE-2021-449068 repos

ycdxsb/WindowsPrivilegeEscalationunknown

Collection of Windows Privilege Escalation (Analyse/PoC/Exploit)

★ 477·updated 1y ago

anthonykirby/lora-packetTypeScript

LoRa radio packet decoder

★ 274·updated 1mo ago

aarsaputra/ppmap-proto-pollutionPython

PPMAP - Prototype Pollution Multi-Purpose Assessment Platform

★ 30·updated today

vulncheck-oss/actionTypeScript

The VulnCheck Github Action

★ 18·updated 3w ago

ponomarenko/verdaccio-security-filterTypeScript

Advanced security filter plugin for Verdaccio with version range blocking and fallback strategies

★ 6·updated 8mo ago

depproof/depproof-actionShell

Self-hosted software composition analysis: dependency license + OSV vulnerability audit and CycloneDX SBOMs for Java, JavaScript, Python & Go (Maven, Gradle, npm/pnpm/yarn, PyPI, G…

★ 6·updated 2w ago

wardsvelds2l/cve-watchTypeScript

Fast, no-auth CVE scanner for Node.js. Free OSV.dev integration, single binary, CI gate.

★ 5·updated 1mo ago

arlotfi79/CVE_ExperimentsShell

★ 5·updated 11mo ago