{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "10.0.13"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "eaef3b5217226cb092d8549752831cb2a9aeaea0"
            },
            {
              "fixed": "4641de8bf0726b05851d29e66fd9e8bf423fe468"
            }
          ],
          "repo": "https://github.com/nodemailer/nodemailer",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g73g-hqqh-jr95"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110870.json"
  },
  "details": "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 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.",
  "id": "CVE-2026-110870",
  "modified": "2026-10-17T02:30:52.673636929Z",
  "published": "2026-10-14T22:52:58.787Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110870.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110870"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/nodemailer-before-10.0.13-improper-input-validation-via-angle-bracket-address-comments"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Nodemailer before 10.0.13 Improper Input Validation via Angle-Bracket Address Comments"
}