CVE-2026-121424
Published:November 03, 2026
Updated:November 04, 2026
Nodemailer from 3.0.0 before 10.1.4 contains an address parsing vulnerability in addressparser that allows remote attackers to redirect recipients by ending nested RFC 5322 comments at the first closing parenthesis. Attackers can submit addresses whose nested comment hides an attacker address, bypassing conformant validators and recipient allow lists to receive mail or spoof senders in mailparser.
Affected Packages
https://github.com/nodemailer/nodemailer.git (GITHUB):
Affected version(s) >=v3.0.0 <v10.1.4 || >=v4.0.0 <v10.1.4 || >=v5.0.0 <v10.1.4 || >=v6.0.0 <v10.1.4 || >=v7.0.0 <v10.1.4 || >=v8.0.0 <v10.1.4 || >=v9.0.0 <v10.1.4 || >=v10.0.0 <v10.1.4Fix Suggestion:
Update to version v10.1.4nodemailer (NPM):
Affected version(s) >=6.0.0 <10.1.4 || >=3.0.0 <10.1.4 || >=4.0.0 <10.1.4 || >=9.0.0 <10.1.4 || >=5.0.0 <10.1.4 || >=10.0.0 <10.1.4 || >=7.0.0 <10.1.4 || >=8.0.0 <10.1.4Fix Suggestion:
Update to version 10.1.4Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
EPSS
Base Score:
0.34