CVE-2026-57207

NetBox MCP Server: HTTP transport exposes all NetBox data without authentication

Published Oct 23, 2026 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
NetBox MCP Server is a simple read-only Model Context Protocol server for NetBox. Prior to version 1.2.1, when running with TRANSPORT=http, the MCP server has no authentication on the HTTP endpoint. Any client that can reach the port gets a valid MCP session and full access to all four NetBox tools - no token or credential needed. This issue has been patched in version 1.2.1.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Netboxlabs
Netboxlabs netbox-mcp-server
Vendors & Products Netboxlabs
Netboxlabs netbox-mcp-server
Type Values Removed Values Added
Description NetBox MCP Server is a simple read-only Model Context Protocol server for NetBox. Prior to version 1.2.1, when running with TRANSPORT=http, the MCP server has no authentication on the HTTP endpoint. Any client that can reach the port gets a valid MCP session and full access to all four NetBox tools - no token or credential needed. This issue has been patched in version 1.2.1.
Title NetBox MCP Server: HTTP transport exposes all NetBox data without authentication
Weaknesses CWE-1059
CWE-306
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 30, 2026, 6:16 PM
Reserved
Jun 24, 2026, 2:00 AM
Status
Deferred
Published
Oct 23, 2026, 2:17 PM
Modified
Oct 30, 2026, 7:18 PM