CVE-2026-121426

HIGH
MEDIUM Priority: 0.02 BB Relevance: 67/100
Published: 2026-11-03 Modified: 2026-11-03 First seen: 2026-11-03 Status: active

Attack Surface

Network No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: X
AT: Present
VC: High
VI: Low
VA: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
nodemailer nodemailer 3.0.0 < 10.1.4

Bug Bounty Relevance

67 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

8.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.22%
Raw Score 0.002210
Percentile 12.8%
Date 2026-11-04

Intelligence Sources

mitre ref →
nvd ref →