{"id":"CVE-2026-55608","revision":"3aeded4042934d3aa90eec7b102f4846","records":[{"revision":"3aeded4042934d3aa90eec7b102f4846","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-55608","aliases":[],"title":"n8n-MCP: Incorrect authorization can expose default-scope workflow version backups in multi-tenant HTTP mode","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.","state":0,"publishedAt":"2026-07-15T20:35:29.539+00:00","modifiedAt":"2026-07-17T12:32:25.385+00:00","affected":[{"ecosystem":"Vendor product","name":"n8n-mcp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"czlonkowski\",\n                    \"product\": \"n8n-mcp\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.57.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","score":4.2,"severity":"MEDIUM"}],"references":["https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-2cf7-hpwf-47h9","https://github.com/czlonkowski/n8n-mcp/commit/1f42899749ed0c584fb6b4fd63d75233c3edee59","https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.57.4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55608","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-55608","identifiers":["CVE-2026-55608"]},"retained":false,"historicalAffected":[]}],"coverage":[]}