Is CVE-2026-82853 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-82853?

CVE-2026-82853 has a CVSS v3 severity of MEDIUM (4.9).

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CVE-2026-82853

Description

Nodemailer versions before 8.0.5 contain an SMTP command injection vulnerability in the transport name option used in EHLO/HELO commands. The name parameter is concatenated directly into SMTP commands without sanitizing carriage return and line feed characters, allowing attackers to inject arbitrary SMTP commands for email spoofing and phishing attacks.