Handlebars prior to 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution

Problem/Motivation

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.

Supported Links: https://www.npmjs.com/advisories/1164
https://www.tenable.com/security/tns-2021-14

Steps to reproduce

Security risk tools reporting the usage of handlebar js prior to 4.3.0, The CVE number CVE-2019-19919 for handlebar JS security vulnerability exposed.

Proposed resolution

Update handlebar js to its latest version (4.7.8)