CVE-2026-55608: Exposure of Sensitive Information to an Unauthorized Actor

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...

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...

Server-side Request Forgery (SSRF)

Overview n8n-mcp is an Integration between n8n workflow automation and Model Context Protocol MCP Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the N8nApiClient, when handling webhook triggers, API client base URLs, and per-request URLs supplied via the...

CVE-2026-44694: Time-of-check Time-of-use (TOCTOU) Race Condition

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. From version 2.18.7 to before version 2.50.2, there is an authenticated server-side request forgery vulnerability affecting the webhook trigger tools, the n8n API client N8NAPIURL, a...

CVE-2026-39974: Server-Side Request Forgery (SSRF)

n8n-MCP is a Model Context Protocol MCP server that provides AI assistants with comprehensive access to n8n node documentation, properties, and operations. Prior to 2.47.4, an authenticated Server-Side Request Forgery in n8n-mcp allows a caller holding a valid AUTHTOKEN to cause the server to iss...