MEDIUM

CVE-2026-82853

CVSS v3

4.9

MEDIUM

EPSS Score

1.0 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

nodemailernpmall versions · fixed in 8.0.5

Vendor advisories

CVE-2026-82853 Red Hat Product Security5 known affected
nodemailer: Nodemailer: SMTP Command Injection allows email spoofing and phishing attacks
rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub · grafana as a component of Red Hat Enterprise Linux 10 · grafana-selinux as a component of Red Hat Enterprise Linux 10

Full record on NVD

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Published: 2026-08-31
Last Modified: 2026-08-31

Frequently asked questions

What is CVE-2026-82853?

Is CVE-2026-82853 actively exploited?

Active exploitation of CVE-2026-82853 has not been confirmed. Its EPSS score was 1.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-82853?

CVE-2026-82853 has a CVSS v3 base score of 4.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.

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