{"id":"CVE-2026-55608","sourceIdentifier":"security-advisories@github.com","published":"2026-07-15T21:16:55.307","lastModified":"2026-10-24T21:10:00.130","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"n8n-MCP es un servidor MCP que proporciona a los asistentes de IA acceso a la documentación, propiedades y operaciones de los nodos n8n. Antes de la versión 2.57.4, el modo HTTP multi-inquilino con ENABLE_MULTI_TENANT=true podría permitir a un inquilino autenticado acceder a copias de seguridad de workflow_versions de alcance predeterminado en lugar de estar confinado al alcance del inquilino, exponiendo o eliminando copias de seguridad de versiones de flujo de trabajo de implementaciones o migraciones anteriores de un solo inquilino. Este problema está solucionado en la versión 2.57.4."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"czlonkowski","product":"n8n-mcp","versions":[{"version":"< 2.57.4","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","baseScore":4.2,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":1.6,"impactScore":2.5},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.5}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-17T12:32:17.752098Z","id":"CVE-2026-55608","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-200"},{"lang":"en","value":"CWE-863"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n-mcp:n8n-mcp:*:*:*:*:*:*:*:*","versionEndExcluding":"2.57.4","matchCriteriaId":"D8421EBD-1A54-4D99-B9E3-46176539C254"}]}]}],"references":[{"url":"https://github.com/czlonkowski/n8n-mcp/commit/1f42899749ed0c584fb6b4fd63d75233c3edee59","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.57.4","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-2cf7-hpwf-47h9","source":"security-advisories@github.com","tags":["Mitigation","Vendor Advisory"]}]}