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Handlebars before 3.0.8 and 4.x before 4.5.3 is vulnerable to Arbitrary Code Execution. The lookup helper fails to properly validate templates, allowing attackers to submit templates that execute arbitrary JavaScript. This can be used to run arbitrary code on a server processing Handlebars templates or in a victim's browser (effectively serving as XSS).
CVE-2019-20920 - High 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-4.0.11.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/handlebars/package.json
Dependency Hierarchy:
Found in HEAD commit: e09ef1e3a45be925a41a2e1aa6a0bcbc6b3c41ea
Found in base branch: master
Handlebars before 3.0.8 and 4.x before 4.5.3 is vulnerable to Arbitrary Code Execution. The lookup helper fails to properly validate templates, allowing attackers to submit templates that execute arbitrary JavaScript. This can be used to run arbitrary code on a server processing Handlebars templates or in a victim's browser (effectively serving as XSS).
Publish Date: 2020-09-30
URL: CVE-2019-20920
Base Score Metrics:
Type: Upgrade version
Origin: https://www.npmjs.com/advisories/1316
Release Date: 2020-10-15
Fix Resolution (handlebars): 4.5.3
Direct dependency fix Resolution (karma-coverage-istanbul-reporter): 1.4.3
⛑️ Automatic Remediation will be attempted for this issue.
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