vuln-mcp-filesystem-workspace-actions
Intentionally vulnerable MCP server for AI security pentesting training.
Exposes filesystem tools (read/write/list/execute) with deliberate path traversal and code execution vulnerabilities. The server accepts a workspace directory but path validation is naive — ../../../etc/passwd escapes the workspace.
DO NOT use in production. This is a training target.
Tools
| Tool | Vulnerability |
|---|---|
read_file |
Path traversal — reads any file on the filesystem |
write_file |
Path traversal — writes to any location the process can access |
list_directory |
Path traversal — lists any directory on the system |
execute_code |
Arbitrary Python code execution, no sandboxing |
Usage
# Run via uvx (after publishing to PyPI)
uvx vuln-mcp-filesystem-workspace-actions /path/to/workspace
# Or locally
python -m vuln_mcp_fs /path/to/workspace
MCP Client Configuration
.mcp.json:
{
"mcpServers": {
"vuln-filesystem": {
"command": "uvx",
"args": [
"vuln-mcp-filesystem-workspace-actions",
"/path/to/workspace"
]
}
}
}
Lab Exercises
- Path traversal: Ask the agent to
read_filewith path../../../etc/passwd - Write outside workspace:
write_fileto../../../tmp/pwned.txt - Code execution: Use
execute_codeto run__import__('os').system('id') - Chain attacks: Read
.envfiles, SSH keys, or AWS credentials from the host
1 maintainer
Metadata
1 maintainer
Release files for vuln-mcp-filesystem-workspace-actions 0.1.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| vuln_mcp_filesystem_workspace_actions-0.1.0.tar.gz | 563.6 kB | Without provenance | Details for vuln_mcp_filesystem_workspace_actions-0.1.0.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| vuln_mcp_filesystem_workspace_actions-0.1.0-py3-none-any.whl | Python 3 | none | any | Details for vuln_mcp_filesystem_workspace_actions-0.1.0-py3-none-any.whl |
Total release size: 568.9 kB
Release files / vuln_mcp_filesystem_workspace_actions-0.1.0.tar.gz
| Download URL | vuln_mcp_filesystem_workspace_actions-0.1.0.tar.gz |
|---|---|
| Size | 563.6 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
708922a8d2790b6f84e265448297123e3578f6b107a5acf411547763d506e25d
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BLAKE2b-256 checksum How to use checksums |
537d59fe6949a0365a131edc7137cfcd5a76e93657b6ee3a08b64a5d53729f6d
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uv/0.11.23 {"installer":{"name":"uv","version":"0.11.23","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"macOS","version":null,"id":null,"libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":null}
|
Release files / vuln_mcp_filesystem_workspace_actions-0.1.0-py3-none-any.whl
| Download URL | vuln_mcp_filesystem_workspace_actions-0.1.0-py3-none-any.whl |
|---|---|
| Size | 5.3 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
7c888b1a5fecb46d3e0ab490abfe5e66491b66523aac83b41f02b07ece37b3bd
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No |
| Uploaded via |
uv/0.11.23 {"installer":{"name":"uv","version":"0.11.23","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"macOS","version":null,"id":null,"libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":null}
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Security for vuln-mcp-filesystem-workspace-actions 0.1.0
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