CVE-2026-55608

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.57.4, multi-tenant HTTP mode with ENABLE_MULTI_TENANT=true could allow an authenticated tenant to access default-scope workflow_versions backups instead of being confined to the tenant scope, exposing or deleting workflow-version backups from prior single-tenant deployments or migrations. This issue is fixed in version 2.57.4.

CVSS v3 4.2 MEDIUM

4.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/czlonkowski/n8n-mcp/commit/1f42899749ed0c584fb6b4fd63d75233c3edee59	Patch
https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.57.4	Release Notes
https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-2cf7-hpwf-47h9	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:n8n-mcp:n8n-mcp:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-15 21:16

Updated : 2026-07-17 17:11

NVD link : CVE-2026-55608

Mitre link : CVE-2026-55608

CVE.ORG link : CVE-2026-55608

JSON object : View

Products Affected

n8n-mcp

n8n-mcp

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

CWE-863

Incorrect Authorization

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