Detections
Analytics

SCA: security update for n8n (GHSA-q5f4-99jv-pgg5)

critical Tenable Cloud Security Plugin ID 440991

Description

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

 - n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, a flaw
 in the xml2js library used to parse XML request bodies in n8n's webhook handler allowed prototype
 pollution via a crafted XML payload. An authenticated user with permission to create or modify workflows
 could exploit this to pollute the JavaScript object prototype and, by chaining the pollution with the Git
 node's SSH operations, achieve remote code execution on the n8n host. This issue has been patched in
 versions 1.123.32, 2.17.4, and 2.18.1. (CVE-2026-42231)

Solution

Update the n8n library and its related packages to version 1.123.32 or later.

See Also

https://github.com/advisories/GHSA-q5f4-99jv-pgg5

Plugin Details

Severity: Critical

ID: 440991

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 4/30/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.88

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2026-42231

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.4

Threat Score: 9.4

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/29/2026

Vulnerability Publication Date: 4/29/2026

Reference Information

CVE: CVE-2026-42231