7.1
High
CVE-2026-110871 Nodemailer from 3.0.0 before 10.0.10 contains a denial of service vulnerability in MessageParser.parseHeaders that…
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| nodemailer 10.0 | earliest → < 10.0.10 | 10.0.10 |
| nodemailer 3.0 | 3.0.0 → < 10.0.10 | 10.0.10 |
Other CVEs of nodemailer
The 25 CVEs of nodemailer →
CVE-2026-121426
Nodemailer from 3.0.0 before 10.1.4 contains an address parsing vulnerability in addressparser that ends an angle-addr…
8.3
High
CVE-2026-121425
Nodemailer from 3.0.0 before 10.1.4 contains a parsing flaw in addressparser that ends an RFC 5322 group at a…
8.3
High
CVE-2026-121424
Nodemailer from 3.0.0 before 10.1.4 contains an address parsing vulnerability in addressparser that allows remote…
8.3
High
CVE-2026-110872
Nodemailer from 3.0.0 before 10.0.10 contains a quadratic complexity denial of service vulnerability in the SMTP…
8.2
High