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Critical

Command injection in nodemailer

  • Disclosed: 10.05.2021
  • Updated: 11.10.2026 10:22

This affects the package nodemailer before 6.4.16. Use of crafted recipient email addresses may result in arbitrary command flag injection in sendmail transport for sending mails.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package nodemailer < 6.4.16 6.4.16

References

CVSS score 9.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-88
Platform
npm
Package
nodemailer
Disclosed
10.05.2021
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-48ww-j4fc-435p - CC BY 4.0

Vulnerability history: nodemailer

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (20) in the archive
Total entries
20
First → latest
05.2021 09.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 6
  • Medium 12
  • Low 1

Disclosures per year

Severity:
  1. Nodemailer addressparser: O(n^2) on comment-joined addresses enables a remote DoS (reachable via mailparser)
    High · 7.5 CVE-2026-90776 >= 9.1.0, < 10.0.5 10.0.5
  2. Nodemailer: Quadratic backtracking in the addressparser free-text fallback allows remote denial of service
    High · 7.5 CVE-2026-100700 < 10.0.6 10.0.6
  3. Nodemailer: Quadratic (O(n²)) time complexity in addressparser allows remote denial of service via a crafted address list
    High · 7.5 CVE-2026-92596 < 9.1.0 9.1.0
  4. Nodemailer: Message-level raw option bypasses disableFileAccess/disableUrlAccess, enabling arbitrary file read and full-response SSRF in the delivered message
    High · 7.1 CVE-2026-82659 < 9.0.1 9.0.1
  5. Nodemailer: Improper TLS Certificate Validation in OAuth2 Token Fetch Enables Credential Interception
    High · 6.5 CVE-2026-82662 < 8.0.8 8.0.8
  6. Nodemailer’s addressparser is vulnerable to DoS caused by recursive calls
    High · 7.5 CVE-2025-14874 >= 3.0.0, < 7.0.11 7.0.11
  7. Command injection in nodemailer this entry
    Critical · 9.8 CVE-2020-7769 < 6.4.16 6.4.16

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