CRITICAL
GHSA-7f8r-222p-6f5g
MCP Inspector proxy server lacks authentication between the Inspector client and proxy
Quick fix
GHSA-7f8r-222p-6f5g — @modelcontextprotocol/inspector: upgrade to the fixed version with the command below.
npm install @modelcontextprotocol/inspector@0.14.1Details
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 <bughunters@tenable.com>
Are you affected?
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Affected packages
npm/@modelcontextprotocol/inspector
Introduced in:
0Fixed in: 0.14.1Fix
npm install @modelcontextprotocol/inspector@0.14.1References
- https://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-7f8r-222p-6f5g[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2025-49596[ADVISORY]
- https://github.com/modelcontextprotocol/inspector/commit/50df0e1ec488f3983740b4d28d2a968f12eb8979[WEB]
- https://github.com/modelcontextprotocol/inspector[PACKAGE]
- https://thenewstack.io/mcp-vulnerability-exposes-the-ai-untrusted-code-crisis[WEB]
- https://www.oligo.security/blog/critical-rce-vulnerability-in-anthropic-mcp-inspector-cve-2025-49596[WEB]