PatchTheCVECVE-2026-45582: n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operati
CVE-2026-45582 is a medium-severity flaw (CVSS 6.5) affecting n8n-mcp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 req
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 82%) |
| CISA exploited list | No |
| Weakness | CWE-201 |
| Published | 2026-05-29 |
| Last modified | 2026-07-21 |
Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-45582?
n8n-mcp: upgrade to 2.51.3. Exact commands for each OS are on this page.
Is CVE-2026-45582 being exploited?
CVE-2026-45582 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-45582 affect?
CVE-2026-45582 affects n8n-mcp. Severity is medium (CVSS 6.5). 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
How urgent is CVE-2026-45582?
Priority 27/100. No elevated risk signals yet.
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