CVE-2026-57207

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

MEDIUM
5.9
CVSS Score
Published: October 23, 2026 at 01:40 PM UTC
Updated: October 23, 2026 at 07:57 PM UTC
1 product affected across 1 vendornetbox-mcp-server

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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

5.9MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-306CWE-1059

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