Grades are a hygiene check, not a security guarantee.

MCP, MCP server

SSH Session MCP

SSH Session MCP, an MCP server listed in the PlugVet directory.

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.

Rescanned at commit 01e5039eba5a, unchanged since the check below.

PERMISSION_SHELL_UNDECLARED INSTALL_LIFECYCLE_HOOK OBFUSCATION_ENCODED_BLOB

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

    Runs shell commands that the manifest or description does not mention.

    src/distributed.ts, line 213 return this.commands.get(commandIdValue);

  • INSTALL_LIFECYCLE_HOOK Medium

    A package install hook (preinstall, install, postinstall or prepare) runs a script.

    package.json, line 25 prepare

  • OBFUSCATION_ENCODED_BLOB Medium

    Contains a long base64 shaped string in a file that should be readable.

    src/viewer-html/page-shell.ts, line 22 ="icon" href="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAzMiAzMiI+PHJlY3Qgd2lkdGg9IjMyIiBoZWlnaHQ9IjMyIiByeD0iNiIgZmlsbD0iIzEx

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

    Concern

    requests shell access. No manifest field names shell or command execution. can delete files.

    PERMISSION_SHELL_UNDECLARED PERMISSION_DELETE_FILES

    src/distributed.ts, line 213

    return this.commands.get(commandIdValue);

    src/server-state.ts, line 1417

    await fs.unlink(RUNTIME_PATHS.serverInfoFile);

  • Install and update

    Concern

    runs a script at install time.

    INSTALL_LIFECYCLE_HOOK

    package.json, line 25

    prepare

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    scripts/ctl.mjs, line 244

    const response = await fetch(url);

    scripts/install-trivy.sh, line 12

    curl -fsSL "${TRIVY_BASE_URL}/${TRIVY_ARCHIVE}" -o "${TRIVY_ARCHIVE}"

    scripts/install-trivy.sh, line 13

    curl -fsSL "${TRIVY_BASE_URL}/${TRIVY_CHECKSUMS}" -o "${TRIVY_CHECKSUMS}"

    Show more

    src/viewer-cli.ts, line 198

    const response = await fetch(url);

    src/viewer-cli.ts, line 208

    const response = await fetch(attachUrl(config, suffix), {

    src/viewer-cli.ts, line 469

    ws = new WebSocket(url);

    src/viewer-html/home-page.ts, line 39

    // fetch("/api/sessions")

    src/viewer-html/home-page.ts, line 95

    // fetch("/api/sessions")

    Dockerfile, line 51

    CMD ["node", "-e", "const port=(process.env.VIEWER_PORT||'8793').trim(); if (port==='0') process.exit(0); fetch(`http://127.0.0.1:${port}/readyz`).then((response)=>{ if(!response.o

    docker-compose.env.yml, line 34

    test: ["CMD", "node", "-e", "fetch('http://127.0.0.1:8793/readyz').then((response)=>{if(!response.ok)process.exit(1);}).catch(()=>process.exit(1));"]

    docker-compose.yml, line 28

    test: ["CMD", "node", "-e", "fetch('http://127.0.0.1:8793/readyz').then((response)=>{if(!response.ok)process.exit(1);}).catch(()=>process.exit(1));"]

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    scripts/build-site.mjs, line 501

    ['Runtime config', '运行时配置', 'Use `.env` for one target and `ssh-session-mcp.co

    scripts/ctl.mjs, line 18

    const ENV_PATH = resolve(ROOT, '.env');

    scripts/ctl.mjs, line 89

    join(WORKSPACE_ROOT, '.env'),

    Show more

    scripts/ctl.mjs, line 105

    // ignore missing .env candidates

    src/repo-validation.ts, line 12

    '.env.example',

    src/repo-validation.ts, line 86

    const envExamplePath = join(rootDir, '.env.example');

    src/repo-validation.ts, line 136

    failures.push(`.env.example is missing required token: ${token}`);

    src/server-state.ts, line 252

    // ── .env loader & argv parser ────────────────────────────────────────────────

    src/server-state.ts, line 344

    export const DEFAULT_KEY = argvConfig.key || process.env.SSH_KEY;

    src/server-state.ts, line 345

    export const DEFAULT_KEY_FILE_CONTENT = argvConfig.key ? undefined : readOptionalSecretFile(process.env.SSH_KEY_FILE, 'SSH_KEY_FILE');

  • 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

    src/viewer-html/page-shell.ts, line 22

    ="icon" href="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAzMiAzMiI+PHJlY3Qgd2lkdGg9IjMyIiBoZWlnaHQ9IjMyIiByeD0iNiIgZmlsbD0iIzEx

  • 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 01e5039eba5a. requests shell access. No manifest field names shell or command execution. can delete files. runs a script at install time. 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: 01e5039eba5a76b5078d946edf12d73a307a300e

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