NetLicensing MCP Server: Unauthenticated Use of Server-Side NetLicensing API Key in HTTP Mode (CVE-2026-54446) | HOL Guard CVE

High severityCVE-2026-54446GHSA-X9VC-9FFQ-P3GJ

NetLicensing MCP Server: Unauthenticated Use of Server-Side NetLicensing API Key in HTTP Mode

Answer in brief

CVE-2026-54446 records a High severity vulnerability in NetLicensing MCP Server: Unauthenticated Use of Server-Side NetLicensing API Key in HTTP Mode. The current sources do not mark it as known exploited. The current feed maps Labs64/NetLicensing-MCP (generic), netlicensing-mcp (pip). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Jul 15, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: High
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Labs64/NetLicensing-MCP (generic), netlicensing-mcp (pip). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Labs64/NetLicensing-MCPgeneric	< 0.1.6	Not reported
netlicensing-mcppip	<=0.1.5	0.1.6

Recommended response

Check inventory. Check lockfiles and deployed manifests for Labs64/NetLicensing-MCP, netlicensing-mcp.
Review the reported fix. Update netlicensing-mcp to 0.1.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 15, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.