CVE-2026-121425
Nodemailer 3.0.0 before 10.1.4 Recipient Injection via addressparser Group Parsing
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| nodemailer nodemailer nodemailer
npm |
≥ 3.0.0; < 10.1.4 (affected, semver) 10.1.4 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.3 high |
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 | CNA: VulnCheck |
| 3.1 / 6.5 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-m943-m63m-w62wCNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.1.4-recipient-injection-via-addressparser-group-parsingCNA: VulnCheck · third-party-advisory
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