---
id: CVE-2026-57207
title: >-
  NetBox MCP Server: HTTP transport exposes all NetBox data without
  authentication
summary: >-
  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 get…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-306
  - CWE-1059
vendor: netboxlabs
product: netbox-mcp-server
affected:
  - netbox-mcp-server < 1.2.1
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T13:40:31.164Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-57207'
references:
  - url: >-
      https://github.com/netboxlabs/netbox-mcp-server/security/advisories/GHSA-5qg7-j8mr-9477
    label: >-
      https://github.com/netboxlabs/netbox-mcp-server/security/advisories/GHSA-5qg7-j8mr-9477
  - url: 'https://github.com/netboxlabs/netbox-mcp-server/releases/tag/v1.2.1'
    label: 'https://github.com/netboxlabs/netbox-mcp-server/releases/tag/v1.2.1'
tags:
  - cve.org
ingestedAt: '2026-10-23T14:28:08.701Z'
---

## Overview

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.

## Affected

- `netbox-mcp-server < 1.2.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.