UBUNTU-CVE-2026-92598 (CVE-2026-92598)

Vulnerability from osv_ubuntu – Published: 2026-09-16 22:18 – Updated: 2026-10-28 17:46 – Source website
VLAI
Details

Nodemailer before 9.1.0 fails to apply UTS-46 normalization when encoding international domain names, causing the domain resolver to compute a different Punycode A-label than standards-compliant parsers. Attackers can craft recipient addresses with invisible characters or compatibility mappings that pass domain allow-list checks but are delivered to attacker-controlled domains via SMTP.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
8.3 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-nodemailer",
            "binary_version": "6.4.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "node-nodemailer",
        "purl": "pkg:deb/ubuntu/node-nodemailer@6.4.5-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.3.0-2",
        "6.3.1-1",
        "6.4.0-1",
        "6.4.1-1",
        "6.4.2-1",
        "6.4.5-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-nodemailer",
            "binary_version": "6.7.1+~6.4.4-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "node-nodemailer",
        "purl": "pkg:deb/ubuntu/node-nodemailer@6.7.1+~6.4.4-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.4.17-3",
        "6.7.0-1",
        "6.7.0-2",
        "6.7.1+~6.4.4-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-nodemailer",
            "binary_version": "6.9.4+~6.4.9-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "node-nodemailer",
        "purl": "pkg:deb/ubuntu/node-nodemailer@6.9.4+~6.4.9-4?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.9.4+~6.4.9-2",
        "6.9.4+~6.4.9-3ubuntu1",
        "6.9.4+~6.4.9-4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-nodemailer",
            "binary_version": "9.0.5+~8.0.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "node-nodemailer",
        "purl": "pkg:deb/ubuntu/node-nodemailer@9.0.5+~8.0.1-1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.0.4+~7.0.11-1",
        "8.0.4+~7.0.11-2",
        "9.0.0+~8.0.1-1",
        "9.0.3+~8.0.1-1",
        "9.0.5+~8.0.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-nodemailer",
            "binary_version": "8.0.4+~7.0.11-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "node-nodemailer",
        "purl": "pkg:deb/ubuntu/node-nodemailer@8.0.4+~7.0.11-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.0.5+~7.0.1-1",
        "7.0.9+~7.0.2-2",
        "7.0.10+~7.0.2-1",
        "7.0.12+~7.0.5-1",
        "8.0.4+~7.0.11-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Nodemailer before 9.1.0 fails to apply UTS-46 normalization when encoding international domain names, causing the domain resolver to compute a different Punycode A-label than standards-compliant parsers. Attackers can craft recipient addresses with invisible characters or compatibility mappings that pass domain allow-list checks but are delivered to attacker-controlled domains via SMTP.",
  "id": "UBUNTU-CVE-2026-92598",
  "modified": "2026-10-28T17:46:02Z",
  "published": "2026-09-16T22:18:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-92598"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-92598"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nodemailer/nodemailer/security/advisories/GHSA-wmmp-3585-3rmp"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-92598"
  ]
}



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