CVE-2020-7746

Name: CVE-2020-7746
Creator: NVD / NIST
Published: 2020-10-29T08:15:12.007+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.68%

Last modified Jun 17, 2026

CVE-2020-7746 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. This affects the package chart.js before 2.9.4. The options parameter is not properly sanitized when it is processed. EPSS estimates a 4.68% chance of exploitation in the next 30 days.

Description

This affects the package chart.js before 2.9.4. The options parameter is not properly sanitized when it is processed. When the options are processed, the existing options (or the defaults options) are deeply merged with provided options. However, during this operation, the keys of the object being set are not checked, leading to a prototype pollution.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

4.68%

90.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Chartjs	Chart.Js	< 2.9.4

References

https://github.com/chartjs/Chart.js/pull/7920Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1019375Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-CHARTJS-1018716Exploit, Third Party Advisory
https://github.com/chartjs/Chart.js/pull/7920Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1019375Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374Exploit, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-CHARTJS-1018716Exploit, Third Party Advisory

Timeline

Published: Oct 29, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7746?

How severe is CVE-2020-7746?

CVE-2020-7746 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.68% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7746?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7746?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST