This affects the package nodemailer before 6.4.16. Use of crafted recipient email addresses may result in arbitrary command flag injection in sendmail transport for sending mails.
https://snyk.io/vuln/SNYK-JS-NODEMAILER-1038834
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1039742
https://github.com/nodemailer/nodemailer/commit/ba31c64c910d884579875c52d57ac45acc47aa54