CVE-2021-23400: Nodemailer

High severity, CVSS 8.8. EPSS: 1.4% chance of exploitation in the next 30 days.

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.

Affected products

• Nodemailer Nodemailer: before 6.6.1 (fixed in 6.6.1)

Published 2021-06-29. Last modified 2026-06-17.