Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Proxmoxmcp Plus

Use MCP and OpenAPI to safely control Proxmox VE VMs, LXCs, backups, and snapshots from LLMs and AI agents.

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit 95e7b0074808.

SECRETS_PATH_CREDENTIAL

Why this grade

  • SECRETS_PATH_CREDENTIAL Medium

    Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).

    docs/container-command-execution.md, line 149 ssh-keygen -t ed25519 -f ~/.ssh/proxmox_key -N ""

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    src/proxmox_mcp/core/process.py, line 22

    process = subprocess.Popen(args, stdin=stdin, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

    src/proxmox_mcp/core/ssh_tunnel.py, line 27

    self._process: subprocess.Popen[str] | None = None

    src/proxmox_mcp/core/ssh_tunnel.py, line 145

    self._process = subprocess.Popen( # noqa: S603

    Show more

    src/proxmox_mcp/tools/console/container_manager.py, line 141

    # subprocess.run kills and reaps the local SSH process on timeout.

    docs/releases/v0.5.8.md, line 25

    `subprocess.run` with `capture_output=True` only redirects stdout and stderr. stdin was inherited from the parent process, which in the case of an MCP server is a pipe connected to

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    scripts/check_pypi_publication.py, line 20

    def fetch(url: str) -> bytes:

    scripts/check_pypi_publication.py, line 21

    with urllib.request.urlopen(url, timeout=30) as response:

    scripts/check_pypi_publication.py, line 79

    remote = fetch(item["url"])

    Show more

    src/proxmox_mcp/mcp_oauth_store.py, line 260

    stale_ids = await conn.fetch(

    src/proxmox_mcp/core/ssh_tunnel.py, line 202

    with socket.create_connection(

    .github/workflows/publish-mcp-registry.yml, line 63

    with urllib.request.urlopen(url, timeout=30) as response:

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV

    src/proxmox_mcp/mcp_oauth_provider.py, line 675

    api_key = os.getenv("MCP_API_KEY")

    src/proxmox_mcp/mcp_oauth_provider.py, line 706

    os.getenv("MCP_OAUTH_ACCESS_TOKEN_TTL_SECONDS", "3600")

    docs/container-command-execution.md, line 149

    ssh-keygen -t ed25519 -f ~/.ssh/proxmox_key -N ""

    Show more

    src/proxmox_mcp/mcp_oauth_provider.py, line 709

    os.getenv("MCP_OAUTH_REFRESH_TOKEN_TTL_SECONDS", "2592000")

    src/proxmox_mcp/openapi_proxy.py, line 549

    parser.add_argument("--api-key", default=os.getenv("PROXMOX_API_KEY"))

    src/proxmox_mcp/server.py, line 361

    api_key = os.getenv("MCP_API_KEY")

    src/proxmox_mcp/config/loader.py, line 168

    'approval_token': os.getenv("COMMAND_POLICY_APPROVAL_TOKEN"),

    src/proxmox_mcp/config/loader.py, line 171

    'high_risk_approval_token': os.getenv("COMMAND_POLICY_HIGH_RISK_APPROVAL_TOKEN"),

    src/proxmox_mcp/config/loader.py, line 190

    'token_name': os.getenv("PROXMOX_TOKEN_NAME"),

    docs/container-command-execution.md, line 150

    chmod 600 ~/.ssh/proxmox_key

    docs/container-command-execution.md, line 151

    cat ~/.ssh/proxmox_key.pub

    docs/container-command-execution.md, line 176

    ssh-keyscan -H pve1 >> ~/.ssh/known_hosts

    docs/container-command-execution.md, line 177

    ssh-keyscan -H pve2 >> ~/.ssh/known_hosts

    .dockerignore, line 23

    .env

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Concern

    contains an encoded blob in a file that should be readable.

    OBFUSCATION_ENCODED_BLOB

    README.md, line 401

    [![Install in Cursor](https://img.shields.io/badge/Cursor-Install_Server-000000?style=flat-square)](https://cursor.com/en/install-mcp?name=proxmox-mcp-plus&config=eyJjb21tYW5kIjoid

    docs/wiki/Client Setup.md, line 24

    [![Install in Cursor](https://img.shields.io/badge/Cursor-Install_Server-000000?style=flat-square)](https://cursor.com/en/install-mcp?name=proxmox-mcp-plus&config=eyJjb21tYW5kIjoid

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 95e7b0074808. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. reads a credential or environment file. contains an encoded blob in a file that should be readable.

Date and source

Date checked:

View source

github.com

Commit graded: 95e7b00748081aa71a7d9ac015f3411889165112

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen