High severity7.5NVD Advisory· Published Sep 13, 2026
CVE-2026-90776
CVE-2026-90776
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2(expand)+ 1 more
- (no CPE)
- (no CPE)range: 9.1.0 - 10.0.4
Patches
Vulnerability mechanics
References
5- github.com/nodemailer/nodemailer/blob/v10.0.4/src/addressparser/index.tsnvd
- github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89nvd
- github.com/nodemailer/nodemailer/releases/tag/v10.0.5nvd
- github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5nvd
- www.vulncheck.com/advisories/nodemailer-9.1.0-through-10.0.4-denial-of-service-via-quadratic-address-parsingnvd
News mentions
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