n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| czlonkowski | n8n-mcp | affected |
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| Czlonkowski | N8n-mcp |
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| Source | ID | Title |
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Github GHSA |
GHSA-f3rg-xqjj-cj9w | n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.262% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
N8n-mcp
N8n-mcp n8n-mcp |
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| CPEs | cpe:2.3:a:n8n-mcp:n8n-mcp:*:*:*:*:*:*:*:* | |
| Vendors & Products |
N8n-mcp
N8n-mcp n8n-mcp |
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| First Time appeared |
Czlonkowski
Czlonkowski n8n-mcp |
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| Vendors & Products |
Czlonkowski
Czlonkowski n8n-mcp |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters | |
| Weaknesses | CWE-201 | |
| References |
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| Metrics |
cvssV3_1
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