CVE-2019-20149

HIGH

Kind-of < 6.0.3 - Exposure to Wrong Actor

Title source: rule

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.

Exploits (1)

nomisec NO CODE

by mrknowledgshare · poc

https://github.com/mrknowledgshare/testing_cve-2019-20149

View Code ZIP pw:eip

References (2)

[Exploit, Issue Tracking, Third Party Advisory] https://github.com/jonschlinkert/kind-of/issues/30

[Patch, Third Party Advisory] https://github.com/jonschlinkert/kind-of/pull/31

Scores

CVSS v3 7.5

EPSS 0.0018

EPSS Percentile 40.0%

Attack Vector NETWORK

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

Classification

CWE

CWE-668

Status published

Affected Products (2)

kind-of_project/kind-of

npm/kind-of < 6.0.3npm

Timeline

Published Dec 30, 2019

Tracked Since Feb 18, 2026