AIKIDO-2026-10942
nodemailer is vulnerable to CRLF Injection
54
Medium Risk
This Affects:
nodemailerTL;DR
Nodemailer constructs List-* headers from the caller-provided list message option using internally prepared header values. The list.*.comment field is inserted into those prepared values without removing CR ( ) or LF ( ) characters. Because prepared headers bypass the normal header-value sanitizer and are passed to mimeFuncs.foldLines(), a CRLF sequence in a list comment is emitted as an actual header boundary in the generated RFC822 message.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
nodemailer is vulnerable to CRLF Injection in versions 0.0.0 - 8.0.8.
How to fix this
Upgrade the nodemailer library to the patch version.
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SOC 2Compliant
ISO 27001Compliant