Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Xlsx For Ai

Short name: xfa — a real CLI command (xfa , xfa samples, xfa --version) and the prompt shorthand (e.g.

Compatibility: Not stated.

Grade D

Two or more Medium findings, or a High. 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_LIFECYCLE_HOOK SECRETS_PATH_CREDENTIAL

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

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

    package.json, line 33 postinstall

  • SECRETS_PATH_CREDENTIAL Medium

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

    .dockerignore, line 11 .npmrc.*

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

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    lib/config.js, line 253

    fs.unlinkSync(tmp);

    lib/fetch-link.js, line 239

    const cleanup = () => { if (dir) { try { fs.rmSync(dir, { recursive: true, force: true }); } catch (_) { /* best effort */ } } };

    lib/installer-cleanup.js, line 159

    fs.rmSync(t, { recursive: true, force: true });

    Show more

    lib/login.js, line 442

    try { fs.unlinkSync(tmp); } catch (__) { /* never created */ }

    lib/login.js, line 466

    try { fs.unlinkSync(target); } catch (_) { /* already gone */ }

    lib/login.js, line 483

    try { fs.unlinkSync(claim); } catch (_) { /* already gone */ }

    scripts/content_id.py, line 40

    p = subprocess.run(["git", "-C", str(tree), *args],

    scripts/front-door-check.js, line 222

    fs.rmSync(work, { recursive: true, force: true });

    scripts/mcp_smoke.py, line 43

    p = subprocess.Popen(

    scripts/mcp_smoke.py, line 49

    p = subprocess.Popen(

    scripts/review_attest_marker_resolve.py, line 77

    r = subprocess.run(cmd, capture_output=True, text=True, timeout=timeout)

    scripts/review_attest_marker_resolve.py, line 122

    r = subprocess.run(cmd, capture_output=True, text=True, timeout=120)

    scripts/review_attest_sign.py, line 53

    p = subprocess.run(["git", "-C", repo, *args], capture_output=True, text=True, timeout=120)

    scripts/review_attest_sign.py, line 64

    p = subprocess.run(["git", "-C", repo, "rev-parse", "--verify", "--quiet", f"{head}:{n}"],

    .grace-refutes.yml, line 183

    python3 -c 'import subprocess,sys; c="import sys; sys.stdin.read(); sys.stdout.write(\"GOT_EOF\"); sys.stdout.flush()"; p=subprocess.Popen([sys.executable,"-c",c],stdin=subprocess.

  • Install and update

    Concern

    runs a script at install time.

    INSTALL_LIFECYCLE_HOOK

    package.json, line 33

    postinstall

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    lib/auto-upgrade.js, line 21

    * XFA_LATEST_VERSION short-circuits the registry fetch (returns this)

    lib/auto-upgrade.js, line 111

    const req = https.get({

    lib/client.js, line 109

    return await fetch(url, { ...init, signal: controller.signal });

    Show more

    lib/discover.js, line 88

    res = await fetch(url, {

    lib/login.js, line 53

    return await fetch(url, init);

    scripts/dod-xls504-mcp-registry-drift.mjs, line 119

    res = await fetch(url, { headers: { "User-Agent": "xls504-drift-check" }, signal: ctl.signal });

    scripts/front-door-check.js, line 117

    const res = await fetch(url, { signal: AbortSignal.timeout(20000) });

    scripts/gen-tool-floor.js, line 67

    // No global fetch (Node <18, or a stripped runtime) is an environment problem,

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV

    mcp.js, line 1837

    const slackToken = process.env.SLACK_BOT_TOKEN || args.slack_token;

    mcp.js, line 1866

    const graphToken = process.env.TEAMS_GRAPH_TOKEN || args.graph_token;

    .dockerignore, line 11

    .npmrc.*

    Show more

    lib/config.js, line 51

    const fromEnv = typeof process.env.XLSX_FOR_AI_KEY === 'string' ? process.env.XLSX_FOR_AI_KEY.trim() : '';

    .dockerignore, line 12

    .env

  • 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.

Get the full report on this tool, £49

Note

Hygiene check of commit 0cfb82ed216a. 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.

Date and source

Date checked:

View source

github.com

Commit graded: 0cfb82ed216a1c773a3236a7410f0ba9c7ba4ca8

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