CVE-2026-92596 [HIGH] – Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressp

Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted comma-separated address list. Attackers can send a single email with a large number of addresses to block the Node.js event loop for extended periods, consuming 100% CPU and freezing the process.