{
  "cveId": "CVE-2026-82854",
  "url": "https://patchblox.com/security/cve/CVE-2026-82854",
  "summary": "CVE-2026-82854 is fixed in node-nodemailer on 1 platform by DEBIAN-CVE-2026-82854 (version 8.0.4\u002B~7.0.11-1), released September 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "node-nodemailer: Nodemailer before 8.0.4 is vulnerable to SMTP command injection through the unsanitized envelope.size parameter",
  "description": "Nodemailer before 8.0.4 is vulnerable to SMTP command injection through the unsanitized envelope.size parameter. When an application passes a custom envelope object with a size property containing CRLF characters to sendMail(), the value is concatenated into the SMTP MAIL FROM command (as SIZE=...) without sanitization, allowing injection of arbitrary SMTP commands such as RCPT TO to silently add attacker-controlled recipients. Exploitation requires the application to expose the envelope size to attacker-controlled input, as Nodemailer does not include size in the default auto-constructed envelope.",
  "published": "2026-08-31T09:17:05Z",
  "severity": "",
  "epss": 0.01975,
  "epssPercentile": 0.80619,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "node-nodemailer",
      "release": "Debian 14",
      "fixedVersion": "8.0.4\u002B~7.0.11-1",
      "fix": "DEBIAN-CVE-2026-82854",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-82854",
      "released": "2026-09-01T01:15:59Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}