CVE-2026-92596Nodemailer before 9.1.0 Denial of Service via addressparser
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
nodemailer nodemailer nodemailer:nodemailer (from the name) | before 9.1.0; 9.1.0 not affected | CNA record |
References
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2vendor-advisory
- https://github.com/nodemailer/nodemailer/commit/9116da9patch
- https://github.com/nodemailer/nodemailer/commit/7cc38afpatch
- https://github.com/nodemailer/nodemailer/commit/34da642patch
- https://github.com/nodemailer/nodemailer/commit/83b8c48patch
- https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-via-addressparserthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.