CVE-2026-110870

Name	CVE-2026-110870
Description	Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that fails to strip RFC 5322 comments inside angle-bracket addresses. Attackers can supply recipients like a display name with a parenthesized comment in the domain, so illegal characters reach envelope.to and RCPT TO, causing rejected delivery or parser interpretation conflicts that bypass domain allow-lists.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
node-nodemailer (PTS)	bookworm	6.8.0+~6.4.6-1	vulnerable
	trixie	6.10.0+~6.4.17-1+deb13u1	vulnerable
	forky, sid	10.0.14+~8.0.2-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
node-nodemailer	source	(unstable)	10.0.13+~8.0.2-1

https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95