CyberRota Analysis
AI-GeneratedMCPHub versions prior to 1.0.31 are vulnerable due to a flaw in the bearer key authorization mechanism, which allows a key scoped to a specific server to inadvertently grant access to all servers within the same group, bypassing intended restrictions. This can lead to unauthorized access to sensitive data and operations across multiple servers. Organizations using MCPHub should prioritize updating to the patched version to mitigate this high-severity risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.31, when a bearer key with accessType: 'servers' (or 'custom') is used against a group route, isBearerKeyAllowedForRequest grants access to the entire group as long as any single server in that group appears in the key's allowedServers list — not only when every server the key is scoped to matches, and critically, without ever re-checking allowedServers again once the group-level connection is authorized. A key explicitly scoped to one specific server therefore also grants full access to every other server that happens to share a group with it, including servers the key was never authorized for. This issue has been patched in version 1.0.31.