CVE-2026-82853CWE-93

CVE-2026-82853

Medium · published August 31, 2026

CVSS v3.1
4.9
EPSS
1%
Percentile
63.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
6.9 · 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
EPSS
0.01031 · 63.4th percentile
Weakness
CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
Published
2026-08-31T13:17Z
References (3)
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-vvjj-xcjg-gr5g · [email protected]https://www.vulncheck.com/advisories/nodemailer-before-8.0.5-smtp-command-injection-via-crlf · [email protected]https://github.com/nodemailer/nodemailer/security/advisories/GHSA-vvjj-xcjg-gr5g · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 01 SEP 03:32Z
    EPSS moved — → 1%
    epss
  • 31 AUG 08:46Z
    Nodemailer before 8.0.5 SMTP Command Injection via CRLF
    cvelistv5