CVE-2018-16489

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A prototype pollution vulnerability was found in just-extend <4.0.0 that allows attack to inject properties onto Object.prototype through its functions.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-400 CWE-74

Affected software

Vendor	Product	Versions
HackerOne	just-extend	<4.0.0

References

https://hackerone.com/reports/430291Exploit, Issue Tracking, Third Party Advisory
https://hackerone.com/reports/430291Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Feb 1, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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