---
id: CVE-2026-54446
title: >-
  NetLicensing MCP Server is a natural-language interface that enables agentic
  applications to manage the software-licensing lifecycle in Labs64 NetLicensing
summary: >-
  NetLicensing MCP Server is a natural-language interface that enables agentic
  applications to manage the software-licensing lifecycle in Labs64
  NetLicensing. Prior to 0.1.6, network-reachable HTTP transport requests to
  /mcp that omit x-ne…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-306
vendor: Labs64
product: NetLicensing-MCP
affected:
  - NetLicensing-MCP < 0.1.6
patched:
  - netlicensing-mcp 0.1.6
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T20:16:50.843'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54446'
references:
  - url: >-
      https://github.com/Labs64/NetLicensing-MCP/commit/fbbb1d5ff88eb5400ec933a84e75601ebee48927
    label: security-advisories@github.com
  - url: 'https://github.com/Labs64/NetLicensing-MCP/releases/tag/0.1.6'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Labs64/NetLicensing-MCP/security/advisories/GHSA-x9vc-9ffq-p3gj
    label: security-advisories@github.com
  - url: >-
      https://github.com/Labs64/NetLicensing-MCP/security/advisories/GHSA-x9vc-9ffq-p3gj
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-x9vc-9ffq-p3gj'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - pip
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-17T19:14:20.238640Z'
aliases:
  - GHSA-x9vc-9ffq-p3gj
ecosystem: pip
ingestedAt: '2026-07-14T21:39:28.668Z'
epss: 0.00619
epssPercentile: 0.4744
---

## Overview

NetLicensing MCP Server is a natural-language interface that enables agentic applications to manage the software-licensing lifecycle in Labs64 NetLicensing. Prior to 0.1.6, network-reachable HTTP transport requests to /mcp that omit x-netlicensing-api-key, Authorization: Bearer, and the apikey query parameter pass through ApiKeyMiddleware in src/netlicensing_mcp/server.py without authentication. The downstream api_key_ctx in src/netlicensing_mcp/client.py then falls back to the operator's NETLICENSING_API_KEY and authenticates upstream NetLicensing REST API calls under the operator account. An unauthenticated attacker can invoke MCP tools to enumerate products, licenses, licensees, and transactions, create or modify licensing objects, perform validations, and execute destructive delete operations. The issue affects HTTP deployments configured with a server-side key and does not require user interaction. This issue is fixed in version 0.1.6.

## Remediation

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

## Package advisory (CVE-2026-54446)

Affected packages:

- `netlicensing-mcp <= 0.1.5`

Patched in:

- `netlicensing-mcp 0.1.6`

Source: https://github.com/advisories/GHSA-x9vc-9ffq-p3gj