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
Chart-1.0.2.js
Simple HTML5 charts using the canvas element.
Library home page: https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.0.2/Chart.js
Path to vulnerable library: /public/plugins/chartjs/Chart.js
Dependency Hierarchy: - :x: **Chart-1.0.2.js** (Vulnerable Library)
Chart-1.0.2.min.js
Simple HTML5 charts using the canvas element.
Library home page: https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.0.2/Chart.min.js
Path to vulnerable library: /public/plugins/chartjs/Chart.min.js
Dependency Hierarchy: - :x: **Chart-1.0.2.min.js** (Vulnerable Library)
Found in HEAD commit: 86334f0df744f6cfa35a438987cbb4d18d65b5c2
Found in base branch: master
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: 2020-10-29
Fix Resolution: chart.js - 2.9.4