CyberRota Analysis
AI-GeneratedThe vulnerability arises from pg-aiguide's MCP HTTP transport, which lacks host allow-listing and DNS-rebinding protection, allowing attackers to send requests from arbitrary hosts to the server. This could lead to unauthorized access or manipulation of the locally reachable MCP server via a maliciously crafted browser page. Organizations using pg-aiguide should prioritize this issue to mitigate potential exploitation risks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
pg-aiguide started its MCP HTTP transport without enabling the host allow-list the underlying SDK provides. src/httpServer.ts called the shared httpServerFactory helper and never set the DNS-rebinding-protection option, so the transport accepted a request whatever host it named. A page in a browser could therefore point a name it controlled at the address the server was bound to and drive the locally reachable MCP server through the visitor's browser. The protection was already available in the packaged transport and simply not turned on, so updating the dependency alone would not have closed it. Version 0.5.1 passes the option explicitly.