CVE-2026-82853

Nodemailer before 8.0.5 SMTP Command Injection via CRLF

MEDIUM
4.9
CVSS Score
Published: August 31, 2026 at 08:46 AM UTC
Updated: September 10, 2026 at 04:18 PM UTC
1 product affected across 1 vendorNodemailer

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Severity
MEDIUM4.9
Exploit prediction
EPSS 1%
SSVC
PoC

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 8.0.5
Vendor states this is fixed in 8.0.5 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-93

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