CVE-2025-49596
Critical
Description
The MCP inspector is a developer tool for testing and debugging MCP servers. Versions of MCP Inspector below 0.14.1 are vulnerable to remote code execution due to lack of authentication between the Inspector client and proxy, allowing unauthenticated requests to launch MCP commands over stdio. Users should immediately upgrade to version 0.14.1 or later to address these vulnerabilities.
SeverityCritical
CVSS9.4
Exploit probability—
Product@modelcontextprotocol/inspector
PublishedJun 13, 2025
First seenJun 13, 2025
Weakness typeCWE-306Missing authentication for critical function
How to fix
Update
- @modelcontextprotocol/inspector0.14.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @modelcontextprotocol/inspectornpm | v < 0.14.1 | 0.14.1 |
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