Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).
Fix
Public exploits 1
- nevermoe/CVE-2021-44906 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 4
- https://github.com/substack/minimist/issues/164 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-MINIMIST-559764 Exploit, Not Applicable, Patch, Third Party Advisory
- https://github.com/substack/minimist/issues/164 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-MINIMIST-559764 Exploit, Not Applicable, Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · substackNVD modified 2026-10-08 21:17
Affected (CPE criteria) 1
cpe:2.3:a:substack:minimist:*:*:*:*:*:node.js:*:*
References 12
- https://github.com/Marynk/JavaScript-vulnerability-detection/blob/main/minimist%20PoC.zip Exploit, Third Party Advisory
- https://github.com/substack/minimist/blob/master/index.js#L69 Exploit, Third Party Advisory
- https://github.com/substack/minimist/issues/164 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240621-0006/
- https://snyk.io/vuln/SNYK-JS-MINIMIST-559764 Exploit, Not Applicable, Patch, Third Party Advisory
- https://stackoverflow.com/questions/8588563/adding-custom-properties-to-a-function/20278068#20278068 Issue Tracking, Third Party Advisory
- https://github.com/Marynk/JavaScript-vulnerability-detection/blob/main/minimist%20PoC.zip Exploit, Third Party Advisory
- https://github.com/substack/minimist/blob/master/index.js#L69 Exploit, Third Party Advisory
- https://github.com/substack/minimist/issues/164 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240621-0006/
- https://snyk.io/vuln/SNYK-JS-MINIMIST-559764 Exploit, Not Applicable, Patch, Third Party Advisory
- https://stackoverflow.com/questions/8588563/adding-custom-properties-to-a-function/20278068#20278068 Issue Tracking, Third Party Advisory