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VULNERABILITIES

CVE-2026-92598 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-wmmp-3585-3rmp CISA-ADP
https://github.com/nodemailer/nodemailer/commit/259c32d [email protected]
https://github.com/nodemailer/nodemailer/commit/b212ac4 [email protected]
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-wmmp-3585-3rmp [email protected]
https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-idn-punycode-domain-allow-list-bypass [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-436Interpretation Conflict[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-92598
NVD Published Date:
Sep 16, 2026
NVD Last Modified:
Sep 22, 2026
Source:
[email protected]
CVE-2026-92598 Details - Not Deferred