CVE-2026-82853

Summary

Nodemailer versions before 8.0.5 contain an SMTP command injection vulnerability in the transport name option used in EHLO/HELO commands. The name parameter is concatenated directly into SMTP commands without sanitizing carriage return and line feed characters, allowing attackers to inject arbitrary SMTP commands for email spoofing and phishing attacks.

Affected Software

Weaknesses

• CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-vvjj-xcjg-gr5g

References

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-vvjj-xcjg-gr5g
• https://www.vulncheck.com/advisories/nodemailer-before-8.0.5-smtp-command-injection-via-crlf

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