Resource Exhaustion Affecting node-nodemailer package, versions <10.0.10+~8.0.1-1


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.38% (32nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-DEBIANUNSTABLE-NODENODEMAILER-20973565
  • published15 Oct 2026
  • disclosed14 Oct 2026

Introduced: 14 Oct 2026

NewCVE-2026-110871  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Debian:unstable node-nodemailer to version 10.0.10+~8.0.1-1 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 Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Nodemailer from 3.0.0 before 10.0.10 contains a denial of service vulnerability in MessageParser.parseHeaders that allows users to exhaust CPU through quadratic header unfolding. Attackers can supply large recipient lists or long headers that fold into tens of thousands of continuation lines, blocking the Node.js event loop during DKIM signing.

CVSS Base Scores

version 3.1