Is CVE-2026-55608 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-55608?

CVE-2026-55608 has a CVSS v3 severity of MEDIUM (4.2).

Back

CVE-2026-55608

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.