CVE-2021-4229: Ua-Parser-Js Project Ua-Parser-Js

High severity, CVSS 8.8. EPSS: 1.5% chance of exploitation in the next 30 days.

A vulnerability was found in ua-parser-js 0.7.29/0.8.0/1.0.0. It has been rated as critical. This issue affects the crypto mining component which introduces a backdoor. Upgrading to version 0.7.30, 0.8.1 and 1.0.1 is able to address this issue. It is recommended to upgrade the affected component.

Affected products

• Ua-Parser-Js Project Ua-Parser-Js: version 0.7.29 only; version 0.8.0 only; version 1.0.0 only

Published 2022-05-24. Last modified 2026-06-17.