Medium 5.9Published Oct 23, 2026

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

Updated under an hour ago (Oct 27, 2026, 2:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for netboxlabs netbox-mcp-server

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-306, CWE-1059
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 23, 2026
First seen by InfoSec Signals: Oct 23, 2026

Affected products

Affected products

netboxlabs netbox-mcp-server netboxlabs:netbox_mcp_server (from the name)	before 1.2.1	CNA record

References

References

https://github.com/netboxlabs/netbox-mcp-server/security/advisories/GHSA-5qg7-j8mr-9477	x-refsource-confirm
https://github.com/netboxlabs/netbox-mcp-server/releases/tag/v1.2.1	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.