{"id":"CVE-2026-110872","published":"2026-10-14T23:17:29.097","lastModified":"2026-10-16T18:14:51.460","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.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-400"],"vendors":[],"products":[],"references":[{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-4g23-2xm8-66gc","tags":[]},{"url":"https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.0.10-denial-of-service-via-smtp-reply-parsing","tags":[]},{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-4g23-2xm8-66gc","tags":[]}],"exploitRefs":[{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-4g23-2xm8-66gc","tags":[]},{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-4g23-2xm8-66gc","tags":[]}],"hasPoc":true,"ai":null}