Arbitrary Code Injection Affecting node-nodemailer package, versions <6.4.17-3


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.39% (70th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NODENODEMAILER-19477140
  • published1 Sept 2026
  • disclosed29 Jun 2021

Introduced: 29 Jun 2021

CVE-2021-23400  (opens in a new tab)
CWE-74  (opens in a new tab)

How to fix?

Upgrade Echo:latest node-nodemailer to version 6.4.17-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream node-nodemailer package and not the node-nodemailer package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

The package nodemailer before 6.6.1 are vulnerable to HTTP Header Injection if unsanitized user input that may contain newlines and carriage returns is passed into an address object.

CVSS Base Scores

version 3.1