CVE-2025-6514 PoC — OS command injection in mcp-remote when connecting to untrusted MCP servers

Source

https://github.com/ChaseHCS/CVE-2025-6514

Associated Vulnerability

Title: OS command injection in mcp-remote when connecting to untrusted MCP servers (CVE-2025-6514)
Description:mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL

Description

Documentation for CVE-2025-6514. MCP-Remote RCE.

Readme

# CVE-2025-6514
Documentation for CVE-2025-6514. MCP-Remote arb code execution.

## To-do list

1. Figure out how to setup Vast.ai 4090 instance.
2. Setup LLama or Gemma model locally on the instance. Be able to successfully query the model.
3. Setup MCP-Remote. Successfully send JSON calls to MCP 0.15.
4. Successfully achieve code execution!

File Snapshot

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