| Name | CVE-2026-92598 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| node-nodemailer (PTS) | bookworm | 6.8.0+~6.4.6-1 | vulnerable |
| trixie | 6.10.0+~6.4.17-1+deb13u1 | vulnerable | |
| forky | 10.0.13+~8.0.2-1 | fixed | |
| sid | 10.0.14+~8.0.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| node-nodemailer | source | (unstable) | 10.0.0+~8.0.1-1 |
[trixie] - node-nodemailer <no-dsa> (Minor issue)
[bookworm] - node-nodemailer <postponed> (Minor issue)
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-wmmp-3585-3rmp
Fixed by: https://github.com/nodemailer/nodemailer/commit/259c32d7d266301e3377a212776c3fff993c0148 (v9.1.0)
Fixed by: https://github.com/nodemailer/nodemailer/commit/b212ac4e27bce8182478044fcb8d1642ccdad46e (v9.1.0)