PT-2026-41303 · Npm · Smtp Server

Published 2026-05-15 · Updated 2026-05-18 · CVE-2026-38728

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Nodemailer smtp server versions prior to 3.18.3

Description A remote attacker can cause a denial of service through the SMTPStream. write function within the lib/smtp-stream.js component.

Recommendations Update to version 3.18.3 or later.

Exploit

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2026-38728

Affected Products

Smtp Server

References · 6

• 🔥 https://bytecreator.dev/blog/CVE-2026-38728 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-38728 · Security Note
• https://github.com/nodemailer/smtp-server/releases/tag/v3.18.3 · Note
• https://github.com/nodemailer/smtp-server · Note
• https://t.me/CVEtracker/53921 · Telegram Post
• https://t.me/cveNotify/163919 · Telegram Post