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CVE-2026-121426 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-85x2-q946-cp5h	CISA-ADP
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-85x2-q946-cp5h	[email protected]
https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.1.4-recipient-domain-confusion-via-addressparser	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 7, 2026	CVE Modified	CISA-ADP
Nov 3, 2026	New CVE Received	[email protected]