Interpretation Conflict Affecting nodemailer package, versions >=3.0.0 <10.4.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-NODEMAILER-22409044
- published11 Nov 2026
- disclosed10 Nov 2026
- creditIsmail Can Guner
Introduced: 10 Nov 2026
NewCVE-2026-125755 (opens in a new tab)How to fix?
Upgrade nodemailer to version 10.4.1 or higher.
Overview
nodemailer is an Easy as cake e-mail sending from your Node.js applications
Affected versions of this package are vulnerable to Interpretation Conflict in addressparser, which sendMail() uses to derive the SMTP envelope recipient. An attacker can make the application send mail to a recipient other than the one it validated by supplying an address whose domain has whitespace or an RFC 5322 comment directly before a dot, such as ceo@victim.example .allowed.example, because the parser ends the address at that point and sendMail() uses the truncated address. Exposure requires the application to restrict recipients by domain with a parser or suffix check other than the one in nodemailer, and to pass the raw address string to sendMail().