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CVE-2026-92596 – Nodemailer before 9.1.0 Denial of Service via addressparser

Posted on September 17, 2026
CVE ID :CVE-2026-92596

Published : Sept. 16, 2026, 10:18 p.m. | 1 hour, 11 minutes ago

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.

Severity: 8.7 | HIGH

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