{"id":"CVE-2026-92596","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-92596","summary":"Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted…","details":"Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted comma-separated address list. Attackers can send a single email with a large number of addresses to block the Node.js event loop for extended periods, consuming 100% CPU and freezing the process.","published":"2026-09-16T22:18:30.557","modified":"2026-09-16T22:18:30.557","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/nodemailer/nodemailer/commit/34da642","label":"nodemailer/nodemailer@34da642"},"references":[{"type":"WEB","url":"https://github.com/nodemailer/nodemailer/commit/34da642"},{"type":"WEB","url":"https://github.com/nodemailer/nodemailer/commit/7cc38af"},{"type":"WEB","url":"https://github.com/nodemailer/nodemailer/commit/83b8c48"},{"type":"WEB","url":"https://github.com/nodemailer/nodemailer/commit/9116da9"},{"type":"WEB","url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-via-addressparser"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-16T22:18:30.557"}}