Advisories for Npm/@Samanhappy/Mcphub package

A critical identity spoofing vulnerability in MCPHub allows any unauthenticated user to impersonate any other user — including administrators — on SSE (Server-Sent Events) and MCP transport endpoints. The server accepts a username from the URL path parameter and creates an internal user session without any database validation, token verification, or authentication check. The source code itself acknowledges this gap with a TODO comment.

Vulnerability Type: Path Traversal (CWE-22) Sink Location: src/controllers/mcpbController.ts:107 Vulnerability Description: The name field from an uploaded MCPB manifest is used directly, without sanitization or normalization, to construct a file system path for directory creation and move operations, which may lead to path traversal attacks.

MCPHub in versions below 0.11.0 is vulnerable to authentication bypass. Some endpoints are not protected by authentication middleware, allowing an unauthenticated attacker to perform actions in the name of other users and using their privileges.

A vulnerability was found in samanhappy MCPHub up to 0.9.10. Affected by this issue is some unknown functionality of the file src/controllers/serverController.ts. The manipulation of the argument command/args results in os command injection. The attack can be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was identified in samanhappy MCPHub up to 0.9.10. This vulnerability affects the function handleSseConnection of the file src/services/sseService.ts. Such manipulation leads to improper authentication. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.