CVE-2020-8147: Utils-Extend Project Utils-Extend

Critical severity, CVSS 9.8. EPSS: 3.1% chance of exploitation in the next 30 days.

Flaw in input validation in npm package utils-extend version 1.0.8 and earlier may allow prototype pollution attack that may result in remote code execution or denial of service of applications using utils-extend.

Affected products

• Utils-Extend Project Utils-Extend: up to and including 1.0.8

Published 2020-04-03. Last modified 2026-06-17.