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8.2 High

CVE-2026-110872 Nodemailer from 3.0.0 before 10.0.10 contains a quadratic complexity denial of service vulnerability in the SMTP…

Description

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.

Affected products and versions

Product Affected versions Fixed in
nodemailer 10.0 earliest → < 10.0.10 10.0.10
nodemailer 3.0 3.0.0 → < 10.0.10 10.0.10

References

Timeline

  1. Published
  2. Last modified

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