This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-100700 →
DEBIAN-CVE-2026-100700
nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pattern that exhibits quadratic back...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
node-nodemailer
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13
node-nodemailer
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14
node-nodemailer
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.0.10+~8.0.1-1"}]}]
References
- advisory security-tracker.debian.org