{"id":"CVE-2026-121425","title":"Nodemailer 3.0.0 before 10.1.4 Recipient Injection via addressparser Group Parsing","summary":"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 appr…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","cvssSource":"cna","cwe":["CWE-20"],"vendor":"nodemailer","product":"nodemailer","affected":["nodemailer >= 3.0.0 < 10.1.4"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-03T16:55:03.726541Z"},"exploitAvailable":true,"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T16:55:34.338Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121425","references":[{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-m943-m63m-w62w","label":"GitHub Security Advisory (GHSA-m943-m63m-w62w)"},{"url":"https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.1.4-recipient-injection-via-addressparser-group-parsing","label":"VulnCheck Advisory: Nodemailer 3.0.0 before 10.1.4 Recipient Injection via addressparser Group Parsing"}],"tags":["cve.org","exploit-available"],"epss":0.00322,"epssPercentile":0.2533,"ingestedAt":"2026-11-05T20:33:06.299Z","slug":"CVE-2026-121425","body":"## Overview\n\nNodemailer 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.\n\n## Affected\n\n- `nodemailer >= 3.0.0 < 10.1.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}