Versions of handlebars prior to 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution. Templates may alter an Object's __proto__ and __defineGetter__ properties, which may allow an attacker to execute arbitrary code through crafted payloads.
CVE-2019-19919 - Critical Severity Vulnerability
Handlebars provides the power necessary to let you build semantic templates effectively with no frustration
Library home page: https://registry.npmjs.org/handlebars/-/handlebars-4.0.8.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/nyc/node_modules/handlebars/package.json
Dependency Hierarchy: - nyc-10.3.2.tgz (Root Library) - istanbul-reports-1.1.0.tgz - :x: **handlebars-4.0.8.tgz** (Vulnerable Library)
Found in HEAD commit: 79e1f4dbaedc036d2bed487dbbf6b15f896efa15
Found in base branch: master
Versions of handlebars prior to 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution. Templates may alter an Object's __proto__ and __defineGetter__ properties, which may allow an attacker to execute arbitrary code through crafted payloads.
Publish Date: 2019-12-20
URL: CVE-2019-19919
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/advisories/GHSA-w457-6q6x-cgp9
Release Date: 2019-12-20
Fix Resolution (handlebars): 4.3.0
Direct dependency fix Resolution (nyc): 11.0.0-candidate.0
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