Detections
Analytics

SCA: security update for n8n (GHSA-mxrg-77hm-89hv)

critical Tenable Self-Hosted Container Security Plugin ID 439274

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 2.14.1, 2.13.3, and 1.123.27, an
 authenticated user with permission to create or modify workflows could exploit a prototype pollution
 vulnerability in the XML and the GSuiteAdmin nodes. By supplying a crafted parameters as part of node
 configuration, an attacker could write attacker-controlled values onto `Object.prototype`. An attacker
 could use this prototype pollution to achieve remote code execution on the n8n instance. The issue has
 been fixed in n8n versions 2.14.1, 2.13.3, and 1.123.27. Users should upgrade to one of these versions or
 later to remediate the vulnerability. If upgrading is not immediately possible, administrators should
 consider the following temporary mitigations: Limit workflow creation and editing permissions to fully
 trusted users only, and/or disable the XML node by adding `n8n-nodes-base.xml` to the `NODES_EXCLUDE`
 environment variable. These workarounds do not fully remediate the risk and should only be used as short-
 term mitigation measures. (CVE-2026-33696)

Solution

Update the n8n library and its related packages to version 1.123.27 or later.

See Also

https://github.com/advisories/GHSA-mxrg-77hm-89hv

Plugin Details

Severity: Critical

ID: 439274

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 3/26/2026

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: 6.7

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

CVSS Score Source: CVE-2026-33696

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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:U/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.4

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:U

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 Ease: No known exploits are available

Patch Publication Date: 3/26/2026

Vulnerability Publication Date: 3/25/2026

Reference Information

CVE: CVE-2026-33696