Detections
Analytics

SCA: security update for n8n (GHSA-537j-gqpc-p7fq)

high Tenable Cloud Security Plugin ID 440995

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, an
 unauthenticated attacker could register a malicious MCP OAuth client with a crafted client_name. If a
 victim user authorized the OAuth consent dialog and a second user subsequently revoked that access, a
 toast notification would render the injected script. Clicking the link would execute arbitrary JavaScript
 in the victim's authenticated n8n browser session, enabling credential and session token theft, workflow
 manipulation, or privilege escalation. This issue has been patched in versions 1.123.32, 2.17.4, and
 2.18.1. (CVE-2026-42235)

Solution

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

See Also

https://github.com/advisories/GHSA-537j-gqpc-p7fq

Plugin Details

Severity: High

ID: 440995

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 4/30/2026

Updated: 6/1/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7.3

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-42235

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Temporal Score: 8.3

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

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

CVSS v4

Risk Factor: High

Base Score: 8.8

Threat Score: 5.8

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/29/2026

Vulnerability Publication Date: 4/29/2026

Reference Information

CVE: CVE-2026-42235