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CRITICAL

CVE-2020-8125

CVSS v3

9.8

CRITICAL

EPSS Score

4.1 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • klonanpmall versions · fixed in 1.1.1

Full record on NVD

Description

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.

Technical details

Published
2020-02-04

Frequently asked questions

What is CVE-2020-8125?

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.

Is CVE-2020-8125 actively exploited?

Active exploitation of CVE-2020-8125 has not been confirmed. Its EPSS score was 4.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-8125?

CVE-2020-8125 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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