CVE Explorer
CVE-2026-45582
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
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"n8n-mcp","vendor":"czlonkowski","versions":[{"status":"affected","version":"< 2.51.3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:c7a233a1744f88e1d30d2b6453080d21df4b9efbd4bc0b2fe5bfe9f03f49a72d · sha256:725dec7596c89d56… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:c7a233a1744f88e1d30d2b6453080d21df4b9efbd4bc0b2fe5bfe9f03f49a72d · sha256:725dec7596c89d56… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-201","description":"CWE-201: Insertion of Sensitive Information Into Sent Data","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:c7a233a1744f88e1d30d2b6453080d21df4b9efbd4bc0b2fe5bfe9f03f49a72d · sha256:725dec7596c89d56… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f","tags":["x_refsource_MISC"],"url":"https://github.com/czlonkowski/n8n-mcp/commit/6cf6fef653fcd6d598f2f356aac4754931c7329f"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c7a233a1744f88e1d30d2b6453080d21df4b9efbd4bc0b2fe5bfe9f03f49a72d · sha256:725dec7596c89d56… · /containers/cna/references/2
{"name":"https://github.com/czlonkowski/n8n-mcp/pull/782","tags":["x_refsource_MISC"],"url":"https://github.com/czlonkowski/n8n-mcp/pull/782"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c7a233a1744f88e1d30d2b6453080d21df4b9efbd4bc0b2fe5bfe9f03f49a72d · sha256:725dec7596c89d56… · /containers/cna/references/1
{"name":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3","tags":["x_refsource_MISC"],"url":"https://github.com/czlonkowski/n8n-mcp/releases/tag/v2.51.3"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c7a233a1744f88e1d30d2b6453080d21df4b9efbd4bc0b2fe5bfe9f03f49a72d · sha256:725dec7596c89d56… · /containers/cna/references/3
{"name":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-f3rg-xqjj-cj9w"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c7a233a1744f88e1d30d2b6453080d21df4b9efbd4bc0b2fe5bfe9f03f49a72d · sha256:725dec7596c89d56… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.