CVE-2019-20149

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

ctorName in index.js in kind-of v6.0.2 allows external user input to overwrite certain internal attributes via a conflicting name, as demonstrated by 'constructor': {'name':'Symbol'}. Hence, a crafted payload can overwrite this builtin attribute to manipulate the type detection result.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-668

Affected software

No affected versions have been published.

Timeline

Published: Dec 30, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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