Prototype pollution in chart.js
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | chart.js | < 2.9.4 | 2.9.4 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-7746
- https://github.com/chartjs/Chart.js/pull/7920
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1019375
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374
- https://snyk.io/vuln/SNYK-JS-CHARTJS-1018716
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-1321, CWE-915- Platform
- npm
- Package
chart.js- Disclosed
- 10.05.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-h68q-55jf-x68w - CC BY 4.0
Vulnerability history: chart.js
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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