What is GHSA-q9mw-f56c-cmvf?

GHSA-q9mw-f56c-cmvf is a security advisory published by GitHub Security Advisories with High severity. Nodemailer from 3.0.0 before 10.1.4 contains a parsing flaw in addressparser that ends an RFC...

Which CVE IDs does GHSA-q9mw-f56c-cmvf cover?

GHSA-q9mw-f56c-cmvf covers the following CVE IDs: CVE-2026-121425. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-q9mw-f56c-cmvf?

GHSA-q9mw-f56c-cmvf has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-q9mw-f56c-cmvfHighCVSS 6.5

Nodemailer from 3.0.0 before 10.1.4 contains a parsing flaw in addressparser that ends an RFC...

Vendor

GitHub Security Advisories

Published

November 3, 2026

Last Modified

November 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-121425 →

📋 Description

Nodemailer from 3.0.0 before 10.1.4 contains a parsing flaw in addressparser that ends an RFC 5322 group at a semicolon inside quoted display names or comments. Attackers can submit crafted group addresses that conformant validators approve, redirecting mail to attacker-chosen recipients and bypassing recipient allow lists.

🔗 References (4)

https://github.com/nodemailer/nodemailer/security/advisories/GHSA-m943-m63m-w62w
https://nvd.nist.gov/vuln/detail/CVE-2026-121425
https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.1.4-recipient-injection-via-addressparser-group-parsing
https://github.com/advisories/GHSA-q9mw-f56c-cmvf