{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/69866?format=json","vulnerability_id":"VCID-3mqn-kjm5-9kh7","summary":"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 — such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters — could therefore appear in stored telemetry, contrary to the collection boundary documented in PRIVACY.md. This vulnerability is fixed in 2.51.3.","aliases":[{"alias":"CVE-2026-45582"},{"alias":"GHSA-f3rg-xqjj-cj9w"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/40877?format=json","purl":"pkg:npm/n8n-mcp@2.51.3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/n8n-mcp@2.51.3"}],"affected_packages":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-45582","reference_id":"","reference_type":"","scores":[{"value":"0.00035","scoring_system":"epss","scoring_elements":"0.10815","published_at":"2026-06-14T12:55:00Z"},{"value":"0.00035","scoring_system":"epss","scoring_elements":"0.10846","published_at":"2026-06-13T12:55:00Z"},{"value":"0.00035","scoring_system":"epss","scoring_elements":"0.10848","published_at":"2026-06-12T12:55:00Z"},{"value":"0.00035","scoring_system":"epss","scoring_elements":"0.10789","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-45582"},{"reference_url":"https://github.com/czlonkowski/n8n-mcp","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/czlonkowski/n8n-mcp"},{"reference_url":"https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f","reference_id":"6cf6fef653fcd6d598f2f356aac4754931c7329f","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-29T18:44:38Z/"}],"url":"https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f"},{"reference_url":"https://github.com/czlonkowski/n8n-mcp/pull/782","reference_id":"782","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-29T18:44:38Z/"}],"url":"https://github.com/czlonkowski/n8n-mcp/pull/782"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45582","reference_id":"CVE-2026-45582","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45582"},{"reference_url":"https://github.com/advisories/GHSA-f3rg-xqjj-cj9w","reference_id":"GHSA-f3rg-xqjj-cj9w","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-f3rg-xqjj-cj9w"},{"reference_url":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w","reference_id":"GHSA-f3rg-xqjj-cj9w","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-29T18:44:38Z/"}],"url":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w"},{"reference_url":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3","reference_id":"v2.51.3","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-29T18:44:38Z/"}],"url":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3"}],"weaknesses":[{"cwe_id":201,"name":"Insertion of Sensitive Information Into Sent Data","description":"The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor."}],"exploits":[],"severity_range_score":"4.0 - 6.9","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-3mqn-kjm5-9kh7"}