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CVE-2026-57207— NetBox MCP Server: HTTP transport exposes all NetBox data without authentication

Quick assessment

Affected
netboxlabs netbox-mcp-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NetBox MCP Server 是一个专为 NetBox 设计的简单只读模型上下文协议（MCP）服务器。在 1.2.1 版本之前，当配置为 时，该 MCP 服务器的 HTTP 端点未启用任何身份验证机制。任何能够访问该端口的客户端均可直接建立有效的 MCP 会话，并无需提供令牌或凭证即可完全访问全部四个 NetBox 工具。此问题已在 1.2.1 版本中修复。

CVSS 5.9 · Medium
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I. Basic Information for CVE-2026-57207

Vulnerability Information
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Vulnerability Title
NetBox MCP Server: HTTP transport exposes all NetBox data without authentication
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
netboxlabs netbox-mcp-server < 1.2.1 -

II. Public POCs for CVE-2026-57207

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III. Intelligence Information for CVE-2026-57207

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Other References for CVE-2026-57207 (2)

IV. Related Vulnerabilities

Same weakness: CWE-306

V. Comments for CVE-2026-57207

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