{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "c2b9c41bb81b2294ebadd294ad15ff035a17d0a5"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v10.4.1",
                "range": [
                  {
                    "fixed": "434b93cedc76108c43ac9b71afb21e4e7af81f13"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c2b9c41bb81b2294ebadd294ad15ff035a17d0a5"
            },
            {
              "fixed": "434b93cedc76108c43ac9b71afb21e4e7af81f13"
            }
          ],
          "repo": "https://github.com/nodemailer/nodemailer",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3q53-mvfw-q9v8"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-436"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/125xxx/CVE-2026-125755.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "10.4.1"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "10.4.1"
              }
            ],
            "source": "CPE_FIELD",
            "strategy": "CPEApplicability"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "10.4.1"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "Nodemailer 3.0.0 before 10.4.1 contains an address parsing flaw in addressparser that truncates domains at folding whitespace or comments before a dot, allowing attackers to bypass recipient domain restrictions. Attackers can submit crafted to, cc, bcc or replyTo addresses that pass RFC 5322 domain checks but deliver mail to an attacker-chosen address under the application's sender identity.",
  "id": "CVE-2026-125755",
  "modified": "2026-11-12T02:31:12.752903489Z",
  "published": "2026-11-10T15:22:50.055Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/125xxx/CVE-2026-125755.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nodemailer/nodemailer/releases/tag/v10.4.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nodemailer/nodemailer/security/advisories/GHSA-3q53-mvfw-q9v8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125755"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.4.1-recipient-allow-list-bypass-via-addressparser"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nodemailer/nodemailer/commit/c2b9c41bb81b2294ebadd294ad15ff035a17d0a5"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/nodemailer/nodemailer/blob/3b5cf1eec32c81f287870c8a1c9c09640062cfd5/src/addressparser/index.ts#L330-L345"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "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"
    }
  ],
  "summary": "Nodemailer 3.0.0 before 10.4.1 Recipient Allow-List Bypass via addressparser"
}