Security advisory

{
  "id": "6b7b619fc6652be53bb5c4fb93830018095bb45dc2c940305d1e3e12219bad12",
  "url": "https://osv.dev/vulnerability/CVE-2026-38728",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-38728",
    "summary": "An issue in Nodemailer smtp_server before v.3.18.3 allows a remote attacker to cause a denial of service via the SMTPStream._write, lib/smtp-stream.js components",
    "evidence": "osv:CVE-2026-38728",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-38728",
      "aliases": [
        "CVE-2026-38728",
        "GHSA-fv2f-rw9f-v9cm"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nodemailer/smtp-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8bb3c74aed43404611c356e194f68fafc488755a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "8bb3c74aed43404611c356e194f68fafc488755a"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v3.18.3"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.18.2",
            "v3.18.1",
            "v3.18.0",
            "v3.17.1",
            "v3.17.0",
            "v3.15.0",
            "v3.14.0",
            "v3.13.8",
            "v3.13.7",
            "v3.13.5",
            "v3.13.4",
            "v3.13.3",
            "v3.13.2",
            "v3.13.0",
            "v3.12.0",
            "v3.11.0",
            "v3.10.0",
            "v3.9.0",
            "v3.8.0",
            "v3.7.0",
            "v3.6.0",
            "v3.5.0",
            "v3.4.7",
            "v3.4.6",
            "v3.4.5",
            "v3.4.4",
            "v3.4.2",
            "v3.4.1",
            "v3.4.0",
            "v3.3.1",
            "v3.3.0",
            "v3.2.0",
            "v3.1.0",
            "v3.0.1",
            "v3.0.0",
            "v2.0.3",
            "v2.0.2",
            "v2.0.1",
            "v2.0.0",
            "v1.17.0",
            "v1.16.1",
            "v1.16.0",
            "v1.15.0",
            "v1.14.2",
            "v1.14.1",
            "v1.14.0",
            "v1.13.1",
            "v1.13.0",
            "v1.12.0",
            "v1.11.2",
            "v1.11.1",
            "v1.11.0",
            "v1.10.0",
            "v1.9.1",
            "v1.9.0",
            "v1.9.0-beta.0",
            "v1.8.0",
            "v1.8.0-beta.0",
            "v1.7.1",
            "v1.7.0",
            "v1.6.0",
            "v1.5.2",
            "v1.5.1",
            "v1.5.0",
            "v1.4.2",
            "v1.4.1",
            "v1.4.0",
            "v1.3.1",
            "v1.3.0",
            "v1.2.0",
            "v1.1.1",
            "v1.1.0",
            "v1.0.2",
            "v1.0.1",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-38728.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.066645135Z",
      "provider": "osv",
      "references": [
        "https://github.com/nodemailer/smtp-server/releases/tag/v3.18.3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38728.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-38728",
        "https://github.com/nodemailer/smtp-server",
        "https://bytecreator.dev/blog/CVE-2026-38728"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38728.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-38728",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493404,
  "published_at": "2026-05-15T00:00:00+00:00"
}