A flaw was found in Nodemailer. This vulnerability allows a denial of service (DoS) via a crafted email address header that triggers infinite recursion in the address parser.
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-rcmh-qjqh-p98v
https://github.com/nodemailer/nodemailer/commit/b61b9c0cfd682b6f647754ca338373b68336a150
https://github.com/nodemailer/nodemailer