{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "10.0.10"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "eaef3b5217226cb092d8549752831cb2a9aeaea0"
            },
            {
              "fixed": "a67b18203defb32f8e890fbb0ba018e826752563"
            }
          ],
          "repo": "https://github.com/nodemailer/nodemailer",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4g23-2xm8-66gc"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110872.json"
  },
  "details": "Nodemailer from 3.0.0 before 10.0.10 contains a quadratic complexity denial of service vulnerability in the SMTP client reply parser in SMTPConnection._onData and isPartialResponse. A malicious SMTP server or on-path attacker can stream continuation lines without a completion line before authentication, blocking the Node.js event loop and exhausting memory.",
  "id": "CVE-2026-110872",
  "modified": "2026-10-17T02:30:52.012307425Z",
  "published": "2026-10-14T22:53:00.625Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110872.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nodemailer/nodemailer/security/advisories/GHSA-4g23-2xm8-66gc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110872"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.0.10-denial-of-service-via-smtp-reply-parsing"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Nodemailer 3.0.0 before 10.0.10 Denial of Service via SMTP Reply Parsing"
}