CVE-2026-110870
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Oct 14, 2026
Vendor
unknown
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.