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.
CVE-2020-7746 - High Severity Vulnerability
Simple HTML5 charts using the canvas element.
Library home page: https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.3/Chart.min.js
Path to dependency file: chartjs-plugin-trendline/example/barChart.html
Path to vulnerable library: chartjs-plugin-trendline/example/barChart.html
Dependency Hierarchy: - :x: **Chart-2.7.3.min.js** (Vulnerable Library)
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.
Publish Date: 2020-10-29
URL: CVE-2020-7746
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7746
Release Date: 2020-07-21
Fix Resolution: chart.js - 2.9.4
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