CVE-2026-110871
Last modified
CVE-2026-110871 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Nodemailer from 3.0.0 before 10.0.10 contains a denial of service vulnerability in MessageParser.parseHeaders that allows users to exhaust CPU through quadratic header unfolding. Attackers can supply large recipient lists or long headers that fold into tens of thousands of continuation lines, blocking the Node.js event loop during DKIM signing.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
Nodemailer from 3.0.0 before 10.0.10 contains a denial of service vulnerability in MessageParser.parseHeaders that allows users to exhaust CPU through quadratic header unfolding. Attackers can supply large recipient lists or long headers that fold into tens of thousands of continuation lines, blocking the Node.js event loop during DKIM signing.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| nodemailer | nodemailer | >= 3.0.0, < 10.0.10 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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