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