node-nodemailer: Nodemailer before 10.0.2 fails to properly flatten deeply nested arrays in recipient fields such as to, cc, and bcc,...
CVE-2026-100702 is fixed in node-nodemailer on 1 platform by DEBIAN-CVE-2026-100702 (version 10.0.10+~8.0.1-1), released September 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Nodemailer before 10.0.2 fails to properly flatten deeply nested arrays in recipient fields such as to, cc, and bcc, allowing attackers to cause stack exhaustion. Attackers can supply a deeply nested JSON recipient array that triggers recursive Array.toString() conversion, exhausting the call stack and terminating the Node.js process.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-nodemailer · Debian 14 | 10.0.10+~8.0.1-1 | DEBIAN-CVE-2026-100702 | Sep 27, 2026 |
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