Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Devcontainer Mcp

Manage dev container environments via MCP tools (DevPod, devcontainer CLI, Codespaces)

Compatibility: Not stated.

Grade D

Two or more Medium findings, or a High finding. Only try it in a sandbox.

Graded by PlugVetRubric v2

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

INSTALL_REMOTE_SCRIPT

Why this grade

  • INSTALL_REMOTE_SCRIPT High

    Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).

    install.ps1, line 85 $wslResult = wsl -d $WslDistro bash -c "curl -fsSL '$installUrl' | bash -s -- --skip-mcp-config" 2>&1

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.

If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.

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

    README.md, line 60

    Invoke-RestMethod https://github.com/aniongithub/devcontainer-mcp/releases/latest/download/install.ps1 | Invoke-Expression

  • Install and update

    Serious

    install fetches a script from the network. README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell.

    INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER

    README.md, line 54

    curl -fsSL https://raw.githubusercontent.com/aniongithub/devcontainer-mcp/main/install.sh | bash

    install.ps1, line 85

    $wslResult = wsl -d $WslDistro bash -c "curl -fsSL '$installUrl' | bash -s -- --skip-mcp-config" 2>&1

    install.ps1, line 91

    Write-Host "Try running manually in WSL: curl -fsSL $installUrl | bash"

    Show more

    install.sh, line 11

    # curl -fsSL https://raw.githubusercontent.com/aniongithub/devcontainer-mcp/main/install.sh | bash

  • Network

    Concern

    can reach a host that is not written as a fixed address. can reach api.github.com. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    install.ps1, line 139

    $hookResult = wsl -d $WslDistro bash -c "mkdir -p '$WslHookDir' && curl -fsSL -o '$WslHookPath' '$hookUrl' && chmod +x '$WslHookPath' && echo OK" 2>&1

    install.ps1, line 146

    $loaderResult = wsl -d $WslDistro bash -c "curl -fsSL -o '$WslLoaderPath' '$loaderUrl' && chmod +x '$WslLoaderPath' && echo OK" 2>&1

    install.ps1, line 155

    wsl -d $WslDistro bash -c "curl -fsSL -o '$WslSkillDataPath' '$skillUrl'" 2>&1 | Out-Null

    Show more

    install.sh, line 56

    curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" \

    install.sh, line 79

    curl -fsSL "$DOWNLOAD_URL" | tar xz -C "${INSTALL_DIR}"

    install.sh, line 117

    curl -fsSL -o "${dir}/SKILL.md" "$SKILL_URL" 2>/dev/null && \

    install.sh, line 134

    curl -fsSL -o "$HOOK_PATH" "$HOOK_URL" 2>/dev/null && \

    install.sh, line 140

    curl -fsSL -o "$LOADER_PATH" "$LOADER_URL" 2>/dev/null && \

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    crates/devcontainer-mcp-core/src/exec_shim.rs, line 151

    .env(USER_CMD_ENV, "echo hello")

    crates/devcontainer-mcp-core/src/exec_shim.rs, line 173

    .env(USER_CMD_ENV, evil)

    crates/devcontainer-mcp-core/src/exec_shim.rs, line 230

    .env(USER_CMD_ENV, "sleep 0.2 & wait")

    Show more

    crates/devcontainer-mcp-core/src/auth/github.rs, line 108

    .env("GH_TOKEN", "")

    crates/devcontainer-mcp-core/src/auth/github.rs, line 124

    .env("GH_TOKEN", "")

  • Agent instructions

    Pass

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

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit 29a607ccb502. requests shell access. The manifest names this permission. install fetches a script from the network. README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell. can reach a host that is not written as a fixed address. can reach api.github.com. The description does not name that host. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 29a607ccb502fe636e7a512caea6a519f1351f00

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