node-nodemailer: Nodemailer from 3.0.0 before 10.0.10 contains a quadratic complexity denial of service vulnerability in the SMTP clie...
CVE-2026-110872 is fixed in node-nodemailer on 1 platform by DEBIAN-CVE-2026-110872 (version 10.0.10+~8.0.1-1), released October 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Nodemailer from 3.0.0 before 10.0.10 contains a quadratic complexity denial of service vulnerability in the SMTP client reply parser in SMTPConnection._onData and isPartialResponse. A malicious SMTP server or on-path attacker can stream continuation lines without a completion line before authentication, blocking the Node.js event loop and exhausting memory.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-nodemailer · Debian 14 | 10.0.10+~8.0.1-1 | DEBIAN-CVE-2026-110872 | Oct 16, 2026 |
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