Missing Authentication for Critical Function Affecting @modelcontextprotocol/inspector package, versions <0.14.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Missing Authentication for Critical Function vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-JS-MODELCONTEXTPROTOCOLINSPECTOR-10381203
- published18 Jun 2025
- disclosed13 Jun 2025
- creditUnknown
Introduced: 13 Jun 2025
CVE-2025-49596 (opens in a new tab)How to fix?
Upgrade @modelcontextprotocol/inspector to version 0.14.1 or higher.
Overview
@modelcontextprotocol/inspector is a Model Context Protocol inspector
Affected versions of this package are vulnerable to Missing Authentication for Critical Function due to a lack of authentication between the client and proxy, an attacker can send unauthenticated requests to the system. This allows them to execute arbitrary commands remotely, leading to a complete compromise of the application.