Detections
Analytics

SCA: security update for n8n-mcp (GHSA-j6r7-6fhx-77wx)

critical Tenable Cloud Security Plugin ID 444718

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 2.56.1, in HTTP mode with multi-tenancy enabled through ENABLE_MULTI_TENANT=true,
 n8n-mcp's local workflow version history backups were not isolated per tenant, allowing an authenticated
 tenant to read workflow version snapshots belonging to other tenants and delete or destroy other tenants'
 stored backups, including full node definitions, credential references, and authorization headers. This
 issue is fixed in version 2.56.1. (CVE-2026-54052)

Solution

Update the n8n-mcp library and its related packages to version 2.56.1 or later.

See Also

https://github.com/advisories/GHSA-j6r7-6fhx-77wx

Plugin Details

Severity: Critical

ID: 444718

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 7/15/2026

Updated: 7/17/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.4

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 8.7

Temporal Score: 6.4

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

CVSS Score Source: CVE-2026-54052

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Temporal Score: 8.6

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-54052