medium6.5
CVE-2026-92598
Nodemailer before 9.1.0 fails to apply UTS-46 normalization when encoding international domain names, causing the domain resolver to compute a different Punyco…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| Nodemailer | before 9.1.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/nodemailer/nodemailer/commit/259c32d
- https://github.com/nodemailer/nodemailer/commit/b212ac4
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-wmmp-3585-3rmp
- https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-idn-punycode-domain-allow-list-bypass
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-wmmp-3585-3rmp