CVE-2026-90776
High · 7.5CVSS
7.5
EPSS
0.7%
Published
Sep 13, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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