Description
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.
Remediation
References
https://www.npmjs.com/advisories/1164
https://www.tenable.com/security/tns-2021-14
Related Vulnerabilities
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CVE-2015-9235 Vulnerability in npm package jsonwebtoken
CVE-2016-4567 Vulnerability in maven package org.webjars:mediaelement
CVE-2020-2239 Vulnerability in maven package org.jenkins-ci.plugins:parameterized-remote-trigger