The package handlebars before 4.7.7 are vulnerable to Remote Code Execution (RCE) when selecting certain compiling options to compile templates coming from an untrusted source.
https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950
https://security.netapp.com/advisory/ntap-20210604-0008/
https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427
https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8