CVE-2026-55608
Medium
Description
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.
SeverityMedium
CVSS4.2
Exploit probability—
ProductN8n-mcp
PublishedJul 15, 2026
First seenJul 15, 2026
How to fix
Update
- n8n-mcp n8n-mcp2.57.4 or later
- n8n-mcp2.57.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| n8n-mcp n8n-mcp | v < 2.57.4 | 2.57.4 |
| n8n-mcpnpm | v < 2.57.4 | 2.57.4 |
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