CVE-2026-45582

{"id": "CVE-2026-45582", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45582", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-29T18:44:38.040272Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "czlonkowski", "product": "n8n-mcp", "versions": [{"status": "affected", "version": "< 2.51.3"}]}]}], "published": "2026-05-29T14:16:30.563", "references": [{"url": "https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/czlonkowski/n8n-mcp/pull/782", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-201"}]}], "descriptions": [{"lang": "en", "value": "n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.51.3, the workflow telemetry sanitizer could retain partial fragments of URL-shaped node parameters before sending workflow data to the project's anonymous telemetry backend. Values placed in HTTP-Request-style node parameters \u2014 such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters \u2014 could therefore appear in stored telemetry, contrary to the collection boundary documented in PRIVACY.md. This vulnerability is fixed in 2.51.3."}, {"lang": "es", "value": "n8n-MCP es un servidor MCP que proporciona a los asistentes de IA acceso a la documentaci\u00f3n, propiedades y operaciones de los nodos n8n. Antes de la versi\u00f3n 2.51.3, el saneador de telemetr\u00eda de flujos de trabajo pod\u00eda retener fragmentos parciales de par\u00e1metros de nodo con forma de URL antes de enviar los datos del flujo de trabajo al backend de telemetr\u00eda an\u00f3nima del proyecto. Los valores colocados en par\u00e1metros de nodo de estilo HTTP-Request \u2014 como identificadores de cliente o inquilino, secretos cortos incrustados en cadenas de consulta y par\u00e1metros de solicitud firmados \u2014 pod\u00edan, por lo tanto, aparecer en la telemetr\u00eda almacenada, en contra del l\u00edmite de recopilaci\u00f3n documentado en PRIVACY.md. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 2.51.3."}], "lastModified": "2026-07-21T12:10:00.090", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:n8n-mcp:n8n-mcp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5692C0AE-4633-443D-BFE0-CC15797A4EDD", "versionEndExcluding": "2.51.3"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}