CVE-2026-121425

HIGH
MEDIUM Priority: 0.03 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
AT: Present
VC: High
VI: Low
VA: None

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
nodemailer nodemailer 3.0.0 < 10.1.4
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

EPSS — Exploitation Probability

0.32%
Raw Score 0.003220
Percentile 25.3%
Date 2026-11-05

EPSS Trend

2026-11-05
0.00322
2026-11-04
0.00322

Intelligence Sources

mitre ref →
nvd ref →