Nodemailer: Recipient-domain validation bypass via RFC 5322 comment mis-parsing leads to email delivery to an attacker-controlled domain

Summary Nodemailer's email-address parser treats an RFC 5322 comment ... inside the domain as a point to concatenate the surrounding text, rather than as folding whitespace CFWS that terminates the domain. Consequently a recipient address such as [email protected] is parsed and delivere...

GHSA-CC9R-2J5M-2M83 Nodemailer: Recipient-domain validation bypass via RFC 5322 comment mis-parsing leads to email delivery to an attacker-controlled domain

Summary Nodemailer's email-address parser treats an RFC 5322 comment ... inside the domain as a point to concatenate the surrounding text, rather than as folding whitespace CFWS that terminates the domain. Consequently a recipient address such as [email protected] is parsed and delivere...