CVE-2026-54446

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Source
https://cve.org/CVERecord?id=CVE-2026-54446
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54446.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54446
Aliases
Published
2026-09-17T17:13:29Z
Modified
2026-09-18T03:47:25Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
NetLicensing MCP Server: Unauthenticated Use of Server-Side NetLicensing API Key in HTTP Mode
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54446.json"
}
References

Affected packages

Git / github.com/labs64/netlicensing-mcp

Affected ranges

Type
GIT
Repo
https://github.com/labs64/netlicensing-mcp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
fbbb1d5ff88eb5400ec933a84e75601ebee48927
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.1.6"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*
0.0.6
0.1.0
0.1.1
0.1.2
0.1.3
0.1.4
0.1.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54446.json"