mcp-package-docs is an An MCP server that provides LLMs with efficient access to package documentation across multiple programming languages

Affected versions of this package are vulnerable to Arbitrary Command Injection via unsanitized input passed to the exec function. An attacker can execute arbitrary system commands by injecting shell metacharacters into input parameters that are incorporated directly into shell command strings.

Affected versions of this package are vulnerable to Denial of Service (DoS). An attacker can cause the application to crash or become unresponsive by supplying a deeply nested chain of imported files, leading to stack exhaustion during parsing.

Note:

This is only exploitable if the attacker can control or supply a crafted file with a recursive import chain.

io.undertow:undertow-core is a Java web server based on non-blocking IO.

Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value due to improper @MultipartConfig annotation handling for very large multipart content.

Note: If the server uses fileSizeThreshold to limit the file size, it's possible to bypass the limit by setting the file name in the request to null.