{"id":"CVE-2026-92596","title":"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","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 comma-separated address list. Attackers can send a s…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400","CWE-1050"],"vendor":"nodemailer","product":"nodemailer","affected":["nodemailer < 9.1.0"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T14:17:54.917","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92596","references":[{"url":"https://github.com/nodemailer/nodemailer/commit/34da642","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nodemailer/nodemailer/commit/7cc38af","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nodemailer/nodemailer/commit/83b8c48","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nodemailer/nodemailer/commit/9116da9","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-via-addressparser","label":"disclosure@vulncheck.com"},{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92596.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92596"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536015"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92596"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92596"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-17T13:23:08.515673Z"},"ingestedAt":"2026-09-16T22:06:50.927Z","epss":0.00453,"epssPercentile":0.38573,"slug":"CVE-2026-92596","body":"## Overview\n\nNodemailer 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Developer Hub, Self-service automation portal 2, Red Hat Enterprise Linux 10 · no fix planned: Red Hat Developer Hub, Self-service automation portal 2 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92596.json)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":206110,"id":"CVE-2026-92596","ts":1789654825051,"field":"exploit_available","old":"false","new":"true"}]}