CVE-2026-82853 PUBLISHED

Nodemailer before 8.0.5 SMTP Command Injection via CRLF

Assigner: VulnCheck
Reserved: 31.08.2026 Published: 31.08.2026 Updated: 31.08.2026

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.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CVSS Score: 4.9

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	nodemailer
Product	nodemailer
Versions	Default: unaffected affected from 0 to 8.0.5 (excl.) Version 8.0.5 is unaffected

CVE-2026-82853 PUBLISHED

Nodemailer before 8.0.5 SMTP Command Injection via CRLF

Metrics

Product Status

Credits

References

Problem Types