Detections
Analytics

SCA: security update for nodemailer (GHSA-39m8-27wv-hr27)

high Tenable Cloud Security Plugin ID 476841

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Nodemailer from 3.0.0 before 10.0.10 contains a denial of service vulnerability in
 MessageParser.parseHeaders that allows users to exhaust CPU through quadratic header unfolding. Attackers
 can supply large recipient lists or long headers that fold into tens of thousands of continuation lines,
 blocking the Node.js event loop during DKIM signing. (CVE-2026-110871)

Solution

Update the nodemailer library and its related packages to version 10.0.10 or later.

See Also

https://github.com/advisories/GHSA-39m8-27wv-hr27

Plugin Details

Severity: High

ID: 476841

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/22/2026

Updated: 10/22/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.67

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2026-110871

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.1

Threat Score: 4.9

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/22/2026

Vulnerability Publication Date: 10/14/2026

Reference Information

CVE: CVE-2026-110871