PatchTheCVECVE-2026-42282: n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operati
CVE-2026-42282 is a medium-severity flaw (CVSS 4.3) 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 version 2.47.13, when n8n-mcp runs in HTTP transport mode, authenticated MCP tools/call requests had their full arguments and JSON-RPC params written to server logs by the request dispatcher and several sibling code paths before any redaction. When a tool call carries credential material — most notably n8n_manage_credentials
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 84%) |
| CISA exploited list | No |
| Weakness | CWE-532 |
| Published | 2026-05-08 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · 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-2026-42282?
n8n-mcp: upgrade to 2.47.13. Exact commands for each OS are on this page.
Is CVE-2026-42282 being exploited?
CVE-2026-42282 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-2026-42282 affect?
CVE-2026-42282 affects n8n-mcp. Severity is medium (CVSS 4.3). n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to version 2.47.13, when n8n-mcp runs in HTTP transport mode, authenticated MCP tools/call requests had their full argu
How urgent is CVE-2026-42282?
Priority 19/100. No elevated risk signals yet.
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