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CVE-2026-54052

9.9 critical SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 9.9 · n8n-mcpNVD modified 2026-10-24 21:10

Affected (CPE criteria) 1

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

References 2