Detections
Analytics

SCA: security update for n8n-mcp (GHSA-f3rg-xqjj-cj9w)

medium Tenable Cloud Security Plugin ID 442073

Description

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

 - n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and
 operations. Prior to 2.51.3, the workflow telemetry sanitizer could retain partial fragments of URL-shaped
 node parameters before sending workflow data to the project's anonymous telemetry backend. Values placed
 in HTTP-Request-style node parameters — such as customer or tenant identifiers, short secrets embedded in
 query strings, and signed request parameters — could therefore appear in stored telemetry, contrary to the
 collection boundary documented in PRIVACY.md. This vulnerability is fixed in 2.51.3. (CVE-2026-45582)

Solution

Update the n8n-mcp library and its related packages to version 2.51.3 or later.

See Also

https://github.com/advisories/GHSA-f3rg-xqjj-cj9w

Plugin Details

Severity: Medium

ID: 442073

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 5/18/2026

Updated: 6/26/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.71

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:C/I:N/A:N

CVSS Score Source: CVE-2026-45582

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:H/I:N/A:N

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/18/2026

Vulnerability Publication Date: 5/18/2026

Reference Information

CVE: CVE-2026-45582

cwe: CWE-201