CVE-2026-90776 — Nodemailer 9.1.0 through 10.0.4 Denial of Service via Quadratic Address Parsing
Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. At…
Published: 2026-09-13 · CVSS: 8.7 · CVSS 4.0
Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. Attackers can craft malicious email headers with comment-separated atoms to consume excessive CPU and block the Node.js event loop for several seconds, causing denial of service.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7