Bug 2532697 (CVE-2026-90776) - CVE-2026-90776 nodemailer: Nodemailer: Denial of Service via crafted email headers
Summary: CVE-2026-90776 nodemailer: Nodemailer: Denial of Service via crafted email he...
Keywords:
Status: NEW
Alias: CVE-2026-90776
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-13 11:51 UTC by OSIDB Bzimport
Modified: 2026-09-13 11:56 UTC (History)
20 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-13 11:51:25 UTC 
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.
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