Vulnerability Description
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 Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/nodemailer/nodemailer/commit/34da642
- https://github.com/nodemailer/nodemailer/commit/7cc38af
- https://github.com/nodemailer/nodemailer/commit/83b8c48
- https://github.com/nodemailer/nodemailer/commit/9116da9
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2
- https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-v
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2
FAQ
What is CVE-2026-92596?
CVE-2026-92596 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2026-92596?
CVE-2026-92596 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-92596?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.