CVE-2021-44906
criticalMinimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).
Vendor / product: Substack — minimist
Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2022-03-17 16:15
Modified: 2026-10-08 21:17
NVD status: Modified
Last synced 2 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
substack / minimist <1.2.6
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/substack/minimist/issues/164
Patch / mitigation: https://snyk.io/vuln/SNYK-JS-MINIMIST-559764
Patch / mitigation: https://github.com/substack/minimist/issues/164
Patch / mitigation: https://snyk.io/vuln/SNYK-JS-MINIMIST-559764
References
- https://github.com/Marynk/JavaScript-vulnerability-detection/blob/main/minimist%20PoC.zip cve@mitre.org
- https://github.com/substack/minimist/blob/master/index.js#L69 cve@mitre.org
- https://github.com/substack/minimist/issues/164 cve@mitre.org
- https://security.netapp.com/advisory/ntap-20240621-0006/ cve@mitre.org
- https://snyk.io/vuln/SNYK-JS-MINIMIST-559764 cve@mitre.org
- https://stackoverflow.com/questions/8588563/adding-custom-properties-to-a-function/2027806... cve@mitre.org
- https://github.com/Marynk/JavaScript-vulnerability-detection/blob/main/minimist%20PoC.zip af854a3a-2127-422b-91ae-364da2661108
- https://github.com/substack/minimist/blob/master/index.js#L69 af854a3a-2127-422b-91ae-364da2661108
- https://github.com/substack/minimist/issues/164 af854a3a-2127-422b-91ae-364da2661108
- https://security.netapp.com/advisory/ntap-20240621-0006/ af854a3a-2127-422b-91ae-364da2661108
- https://snyk.io/vuln/SNYK-JS-MINIMIST-559764 af854a3a-2127-422b-91ae-364da2661108
- https://stackoverflow.com/questions/8588563/adding-custom-properties-to-a-function/2027806... af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗