---
id: CVE-2026-121426
title: Nodemailer 3.0.0 before 10.1.4 Recipient Domain Confusion via addressparser
summary: >-
  Nodemailer from 3.0.0 before 10.1.4 contains an address parsing vulnerability
  in addressparser that ends an angle-addr at a '>' inside a quoted local part,
  comment or domain literal. Attackers can submit addresses that validate as an
  all…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-20
vendor: nodemailer
product: nodemailer
affected:
  - nodemailer >= 3.0.0 < 10.1.4
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T14:28:21.474Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121426'
references:
  - url: >-
      https://github.com/nodemailer/nodemailer/security/advisories/GHSA-85x2-q946-cp5h
    label: GitHub Security Advisory (GHSA-85x2-q946-cp5h)
  - url: >-
      https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.1.4-recipient-domain-confusion-via-addressparser
    label: >-
      VulnCheck Advisory: Nodemailer 3.0.0 before 10.1.4 Recipient Domain
      Confusion via addressparser
tags:
  - cve.org
epss: 0.00221
epssPercentile: 0.1282
ingestedAt: '2026-11-05T19:30:42.967Z'
---

## Overview

Nodemailer from 3.0.0 before 10.1.4 contains an address parsing vulnerability in addressparser that ends an angle-addr at a '>' inside a quoted local part, comment or domain literal. Attackers can submit addresses that validate as an allowed domain but are delivered to an attacker-controlled domain, bypassing recipient allow lists and disclosing message content.

## Affected

- `nodemailer >= 3.0.0 < 10.1.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.