๐Ÿ›ก๏ธ CVE-2026-45582
๐ŸŸก CVSS 6.5 โ€” Medium โœ… No Known Exploit CWE-201 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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 โ€” such as customer or tenant identifiers, short secrets embedded in query strings, and signed request parameters โ€” could therefore appear in stored telemetry, contrary to the collection boundary documented in PRIVACY.md. This vulnerability is fixed in 2.51.3.

Details

Severity Medium
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-201
Public Exploit โœ… No
Source NVD
Published 2026-05-18
Updated 2026-06-15
Modified 2026-06-09
Fix URL N/A

Affected Packages

Software From version Fixed in
n8n-mcp โ€” โ€”
unknown โ€” โ€”

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