What is GHSA-597p-2mmq-hhg9?

GHSA-597p-2mmq-hhg9 is a security advisory published by GitHub Security Advisories with Medium severity. Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its...

Which CVE IDs does GHSA-597p-2mmq-hhg9 cover?

GHSA-597p-2mmq-hhg9 covers the following CVE IDs: CVE-2026-110870. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-597p-2mmq-hhg9?

GHSA-597p-2mmq-hhg9 has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

GHSA-597p-2mmq-hhg9MediumCVSS 5.3

Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its...

Vendor

GitHub Security Advisories

Published

October 15, 2026

Last Modified

October 15, 2026

🔗 CVE IDs covered (1)

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.

🔗 References (4)

https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95
https://nvd.nist.gov/vuln/detail/CVE-2026-110870
https://www.vulncheck.com/advisories/nodemailer-before-10.0.13-improper-input-validation-via-angle-bracket-address-comments
https://github.com/advisories/GHSA-597p-2mmq-hhg9