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CVE-2025-49596

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Date: June 13, 2025

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.

Severity Score

Related Resources (7)

https://github.com/modelcontextprotocol/inspector/security/advisories/GHSA-7f8r-222p-6f5g
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
https://github.com/modelcontextprotocol/inspector/commit/50df0e1ec488f3983740b4d28d2a968f12eb8979
https://nvd.nist.gov/vuln/detail/CVE-2025-49596
https://www.mend.io/vulnerability-database/CVE-2025-49596

Severity Score

Weakness Type (CWE)

Missing Authentication for Critical Function

CWE-306

Top Fix

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Upgrade Version

Upgrade to version @modelcontextprotocol/inspector - 0.14.1;@modelcontextprotocol/inspector - 0.14.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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