CVE-2020-8125: Klona Project Klona

Critical severity, CVSS 9.8. EPSS: 4.1% chance of exploitation in the next 30 days.

Flaw in input validation in npm package klona version 1.1.0 and earlier may allow prototype pollution attack that may result in remote code execution or denial of service of applications using klona.

Affected products

• Klona Project Klona: up to and including 1.1.0

Published 2020-02-04. Last modified 2026-06-17.