{"cve":"CVE-2026-55608","nvd":{"published":"2026-07-15T21:16:55.307","modified":"2026-10-24T21:10:00.130","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-200","CWE-863"],"references":["https://github.com/czlonkowski/n8n-mcp/commit/1f42899749ed0c584fb6b4fd63d75233c3edee59","https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.57.4","https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-2cf7-hpwf-47h9"],"products":["n8n-mcp:n8n-mcp"],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-55608","score":0.0028,"percentile":0.20323,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-2cf7-hpwf-47h9","url":"https://osv.dev/vulnerability/GHSA-2cf7-hpwf-47h9","summary":"n8n-MCP: Incorrect authorization can expose default-scope workflow version backups in multi-tenant HTTP mode","modified":"2026-07-14T20:41:39.631777Z","packages":[{"ecosystem":"npm","name":"n8n-mcp","purl":"pkg:npm/n8n-mcp","ranges":["<2.57.4"],"fixed":["2.57.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}