The package handlebars before 4.7.7 are vulnerable to Prototype Pollution when selecting certain compiling options to compile templates coming from an untrusted source.
{ "nvd_published_at": "2021-05-04T09:15:00Z", "cwe_ids": [ "CWE-1321" ], "severity": "CRITICAL", "github_reviewed": true, "github_reviewed_at": "2021-05-19T21:17:59Z" }