GHSA-7f8r-222p-6f5g
MCP Inspector proxy server lacks authentication between the Inspector client and proxy
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @modelcontextprotocol/inspector | < 0.14.1 | 0.14.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
Credit: Rémy Marot <[email protected]>
References
External links from the advisory. They lead to third-party sites.
- https://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-7f8r-222p-6f5g
- https://nvd.nist.gov/vuln/detail/CVE-2025-49596
- https://github.com/modelcontextprotocol/inspector/commit/50df0e1ec488f3983740b4d28d2a968f12eb8979
- https://github.com/modelcontextprotocol/inspector
- https://thenewstack.io/mcp-vulnerability-exposes-the-ai-untrusted-code-crisis
- https://www.oligo.security/blog/critical-rce-vulnerability-in-anthropic-mcp-inspector-cve-2025-49596