node-nodemailer: Nodemailer before 9.1.0 fails to apply UTS-46 normalization when encoding international domain names, causing the dom...
CVE-2026-92598 is fixed in node-nodemailer on 1 platform by DEBIAN-CVE-2026-92598 (version 10.0.0+~8.0.1-1), released September 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Nodemailer before 9.1.0 fails to apply UTS-46 normalization when encoding international domain names, causing the domain resolver to compute a different Punycode A-label than standards-compliant parsers. Attackers can craft recipient addresses with invisible characters or compatibility mappings that pass domain allow-list checks but are delivered to attacker-controlled domains via SMTP.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-nodemailer · Debian 14 | 10.0.0+~8.0.1-1 | DEBIAN-CVE-2026-92598 | Sep 18, 2026 |
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