CVE-2026-121424Medium· 6.5▾ SunlitNodemailer 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 …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.3%
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.
nodemailer >= 3.0.0 < 10.1.4Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
GHSA-8c8m-p3m8-cjg8Medium· 6.5Nodemailer: A nested comment ends early in addressparser, releasing the rest of the comment as a recipient
CVE-2026-121425Medium· 6.5Nodemailer 3.0.0 before 10.1.4 Recipient Injection via addressparser Group Parsing
CVE-2026-121426Medium· 6.5Nodemailer 3.0.0 before 10.1.4 Recipient Domain Confusion via addressparser
CVE-2026-110870Medium· 5.3Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that fails to strip RFC 5322 comments inside angle-bracket addresses
CVE-2026-100699Medium· 5.3Nodemailer is a Node.js email-sending library
GHSA-g73g-hqqh-jr95Medium· 5.3Nodemailer: RFC 5322 comment inside an angle-bracket address is never stripped