{"id":"CVE-2026-110870","title":"Nodemailer 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","summary":"Nodemailer 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. Attackers can supply recipients like a display name with…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-20"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T23:17:28.813","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110870","references":[{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nodemailer-before-10.0.13-improper-input-validation-via-angle-bracket-address-comments","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-15T00:02:07.189Z","slug":"CVE-2026-110870","body":"## Overview\n\nNodemailer 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. Attackers can supply recipients like a display name with a parenthesized comment in the domain, so illegal characters reach envelope.to and RCPT TO, causing rejected delivery or parser interpretation conflicts that bypass domain allow-lists.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}