HIGH 7.1 NVD
CVE-2026-110871
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
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.
References
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-39m8-27wv-hr27
- https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.0.10-quadratic-dkim-header
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-10-14 via NVD.
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