Improper Authorization

n8n-mcp is vulnerable to Improper Authorization. The vulnerability is due to insufficient tenant isolation in multi-tenant HTTP mode, which allows an authenticated tenant to access locally stored workflow version backups outside of its assigned tenant scope...

Improper Authorization

n8n-mcp is vulnerable to Improper Authorization. The vulnerability is due to insufficient tenant isolation of locally stored workflow version history, which allows an authenticated tenant to read or delete workflow backups belonging to other tenants, exposing sensitive configuration data and...

CVE-2026-54052

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 ENABLEMULTITENANT=true, n8n-mcp's local workflow version history backups were not isolated per tenant, allowing an...

CVE-2026-55608 n8n-MCP: Incorrect authorization can expose default-scope workflow version backups in multi-tenant HTTP mode

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 ENABLEMULTITENANT=true could allow an authenticated tenant to access default-scope workflowversions backups instead of being confined to...

CVE-2026-55608

n8n-mcp prior to 2.57.4 is affected. In multi-tenant HTTP mode (ENABLE_MULTI_TENANT=true), an authenticated MCP HTTP tenant could access default-scope workflow_versions backups rather than its own tenant scope, potentially reading or deleting backups from prior single-tenant deployments or migrat...

CVE-2026-54052

n8n-MCP (HTTP mode with multi-tenancy enabled via ENABLE_MULTI_TENANT=true) is affected prior to version 2.56.1. An authenticated tenant could read and delete other tenants’ workflow version backups, including full node definitions, credential references, and authorization headers, due to backups...

CVE-2026-54052 n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments

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 ENABLEMULTITENANT=true, n8n-mcp's local workflow version history backups were not isolated per tenant, allowing an...

CVE-2026-54052 n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments

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 ENABLEMULTITENANT=true, n8n-mcp's local workflow version history backups were not isolated per tenant, allowing an...

NPM: n8n-MCP: Incorrect authorization can expose default-scope workflow version backups in multi-tenant HTTP mode

NPM: n8n-MCP: Incorrect authorization can expose default-scope workflow version backups in multi-tenant HTTP mode vulnerability discovered by ? in WordPress Npm n8n-mcp versions = 2.57.3...

n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments

Impact In multi-tenant HTTP deployments — where a single n8n-mcp server serves several tenants — the locally stored workflow version history the automatic backups taken before workflow updates was not isolated per tenant. An authenticated tenant could read workflow version snapshots belonging to...

GHSA-J6R7-6FHX-77WX n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments

Impact In multi-tenant HTTP deployments — where a single n8n-mcp server serves several tenants — the locally stored workflow version history the automatic backups taken before workflow updates was not isolated per tenant. An authenticated tenant could read workflow version snapshots belonging to...

NPM: n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments

NPM: n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments vulnerability discovered by ? in WordPress Npm n8n-mcp versions = 2.56.0...