Algorithmic Complexity Affecting node-nodemailer package, versions <10.0.10+~8.0.1-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.34% (27th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-NODENODEMAILER-20154374
  • published27 Sept 2026
  • disclosed26 Sept 2026

Introduced: 26 Sep 2026

NewCVE-2026-100700  (opens in a new tab)
CWE-407  (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 before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pattern that exhibits quadratic backtracking behavior. Attackers can supply crafted email header values with long whitespace-free runs to block the Node.js event loop for tens of seconds, causing service unavailability.

CVSS Base Scores

version 3.1