CVE-2026-45582 (GCVE-0-2026-45582)

Vulnerability from cvelistv5 – Published: 2026-05-29 13:37 – Updated: 2026-05-29 18:44
VLAI
Title
n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters
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.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 18:44 UTC
CWE
  • CWE-201 - Insertion of Sensitive Information Into Sent Data
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7763 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
czlonkowski n8n-mcp Affected: < 2.51.3
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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