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CVE-2026-110871

7.1 high SSVC exploitation: poc Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 3

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 02:28
  2. StatusReceived → Awaiting AnalysisNVD modified 2026-10-15 20:33
  3. First seenCVSS 7.1NVD modified 2026-10-14 23:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3