CVE-2026-110870

MEDIUMCVSS 5.3

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.

Timeline

Published:October 14th, 2026 11:17 PM

Last modified:October 15th, 2026 8:33 PM

CVSS Scoring

CVSS v3: 5.3 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-20

References & Reports

Advisories, patches, and third-party reports

https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95
https://www.vulncheck.com/advisories/nodemailer-before-10.0.13-improper-input-validation-via-angle-bracket-address-comments

Source: NIST NVD · Data may lag official sources by up to one minute