Critical severityOSV Advisory· Published Jun 13, 2025· Updated Apr 15, 2026
CVE-2025-49596
CVE-2025-49596
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@modelcontextprotocol/inspectornpm | < 0.14.1 | 0.14.1 |
Affected products
2- Range: 0.0.1, 0.1.0, 0.10.2, …
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-7f8r-222p-6f5gghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-49596ghsaADVISORY
- github.com/modelcontextprotocol/inspector/commit/50df0e1ec488f3983740b4d28d2a968f12eb8979nvdWEB
- github.com/modelcontextprotocol/inspector/security/advisories/GHSA-7f8r-222p-6f5gnvdWEB
- thenewstack.io/mcp-vulnerability-exposes-the-ai-untrusted-code-crisisnvdWEB
- www.oligo.security/blog/critical-rce-vulnerability-in-anthropic-mcp-inspector-cve-2025-49596nvdWEB
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