node-nodemailer: nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pat...
CVE-2026-100700 is fixed in node-nodemailer on 1 platform by DEBIAN-CVE-2026-100700 (version 10.0.10+~8.0.1-1), released September 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.
nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pattern that exhibits quadratic backtracking behavior. Attackers can supply crafted email header values with long whitespace-free runs to block the Node.js event loop for tens of seconds, causing service unavailability.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-nodemailer · Debian 14 | 10.0.10+~8.0.1-1 | DEBIAN-CVE-2026-100700 | Sep 27, 2026 |
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