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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/modelcontextprotocol/inspector/commit/50df0e1ec488f3983740b4…
security-advisories@github.com
https://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-7f8r…
security-advisories@github.com
https://thenewstack.io/mcp-vulnerability-exposes-the-ai-untrusted-code-crisis
security-advisories@github.com
https://www.oligo.security/blog/critical-rce-vulnerability-in-anthropic-mcp-ins…
security-advisories@github.com