CVE-2026-92596
highNodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of servi…
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/nodemailer/nodemailer/commit/34da642 disclosure@vulncheck.com
- https://github.com/nodemailer/nodemailer/commit/7cc38af disclosure@vulncheck.com
- https://github.com/nodemailer/nodemailer/commit/83b8c48 disclosure@vulncheck.com
- https://github.com/nodemailer/nodemailer/commit/9116da9 disclosure@vulncheck.com
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-via-address... disclosure@vulncheck.com
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2 134c704f-9b21-4f2e-91b3-4a467353bcc0