Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

skrun

skrun, a skill 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 b1d963b36174, unchanged since the check below.

PERMISSION_SHELL_UNDECLARED INSTALL_REMOTE_SCRIPT

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

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

    packages/runtime/src/tools/script-deps-installers.ts, line 73 /** Production runner - wraps `node:child_process.execFile`. */

  • INSTALL_REMOTE_SCRIPT Medium

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

    infra/runtime-image/Dockerfile, line 91 # Was `curl https://mise.run | sh` - an unpinned remote

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

    requests shell access. No manifest field names shell or command execution.

    PERMISSION_SHELL_UNDECLARED

    packages/runtime/src/tools/script-deps-installers.ts, line 73

    /** Production runner - wraps `node:child_process.execFile`. */

    packages/runtime/src/tools/script-deps-resolver.ts, line 26

    * Defaults to `execFileRunner` (real `child_process.execFile`).

  • Install and update

    Serious

    install fetches a script from the network.

    INSTALL_REMOTE_SCRIPT

    CHANGELOG.md, line 121

    remote installer script into a shell (`curl https://mise.run | sh`) with no version, checksum or signatur

    infra/runtime-image/Dockerfile, line 91

    # Was `curl https://mise.run | sh` - an unpinned remote

  • Network

    Concern

    can reach a host that is not written as a fixed address. can reach example.com. The description does not name that host. can reach evil.invalid. The description does not name that host. can reach 1.1.1.1. The description does not name that host. can reach cdn.jsdelivr.net. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    agents/adr-writer/README.md, line 30

    curl -X POST http://localhost:4000/api/agents/dev/adr-writer/run \

    agents/adr-writer/README.md, line 48

    curl http://localhost:4000/api/runs/<run_id>/files/0003-*.md \

    agents/changelog-generator/README.md, line 32

    # 3. Call it via the CLI (or use curl below)

    Show more

    agents/changelog-generator/README.md, line 37

    curl -X POST http://localhost:4000/api/agents/dev/changelog-generator/run \

    agents/changelog-generator/README.md, line 51

    curl http://localhost:4000/api/runs/<run_id>/files/CHANGELOG.md \

    agents/changelog-generator/README.md, line 53

    curl http://localhost:4000/api/runs/<run_id>/files/release-notes.md \

    agents/csv-to-executive-report/README.md, line 37

    curl -X POST http://localhost:4000/api/agents/dev/csv-to-executive-report/run \

    agents/csv-to-executive-report/README.md, line 52

    curl http://localhost:4000/api/runs/<run_id>/files/report.pdf \

    agents/knowledge-base-from-vault/README.md, line 34

    curl -X POST http://localhost:4000/api/agents/dev/knowledge-base-from-vault/run \

    agents/semgrep-rule-creator/README.md, line 36

    "cve_description": "Server-Side Request Forgery via user-controlled URL passed directly to fetch() without allowlist validation.",

    agents/semgrep-rule-creator/README.md, line 37

    "bad_code_example": "const url = req.query.url; const res = await fetch(url); res.send(await res.text());",

    agents/semgrep-rule-creator/fixtures/sample-cve.md, line 31

    const result = await fetch(url);

    agents/semgrep-rule-creator/fixtures/sample-cve.md, line 48

    const result = await fetch(url);

    infra/runtime-image/entrypoint.sh, line 94

    # Without this rule, getent / curl can't resolve the allowed hosts.

    infra/runtime-image/zero-trust.test.sh, line 78

    # we curl from a debug entrypoint rather than the real runner-start.

    infra/runtime-image/zero-trust.test.sh, line 89

    # debug probe (skips the capsh handoff so we can curl as root after).

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    infra/runtime-image/runner/src/index.ts, line 130

    if (isPoolMode() && !process.env.RUNNER_CLAIM_TOKEN) {

    infra/runtime-image/runner/src/index.ts, line 157

    claimToken: process.env.RUNNER_CLAIM_TOKEN,

    infra/runtime-image/runner/src/index.ts, line 158

    runToken: process.env.RUNNER_RPC_TOKEN,

    Show more

    infra/runtime-image/runner/src/index.ts, line 249

    process.env.RUNNER_RPC_TOKEN = parsed.data.rpcToken;

    infra/runtime-image/runner/src/index.ts, line 255

    delete process.env.RUNNER_CLAIM_TOKEN;

    packages/api/src/index.test.ts, line 140

    delete process.env.FLY_API_TOKEN;

    packages/api/src/index.test.ts, line 142

    delete process.env.S3_ACCESS_KEY_ID;

    packages/api/src/index.test.ts, line 143

    delete process.env.S3_SECRET_ACCESS_KEY;

    packages/api/src/index.ts, line 269

    "See .env.example.",

    packages/api/src/runtime/adapter-selection.ts, line 70

    "See .env.example for the supported values.",

    packages/api/src/runtime/adapter-selection.ts, line 107

    "See .env.example for the full cloud-runtime configuration.",

    packages/api/src/utils/webhook.ts, line 32

    "Set the WEBHOOK_SIGNING_KEY environment variable (see .env.example).",

    packages/cli/src/commands/build.test.ts, line 39

    expect(AGENT_BUNDLE_EXCLUDES.has(".env")).toBe(true);

    packages/runtime/src/tools/script-deps-installers.test.ts, line 363

    expect(uvCall?.env?.UV_PROJECT_ENVIRONMENT).toBe(join(depsPath, "venv"));

    packages/runtime/src/tools/script-deps-installers.test.ts, line 364

    expect(uvCall?.env?.UV_INDEX_URL).toBe(PYPI_INDEX_URL);

    packages/runtime/src/tools/script-deps-installers.test.ts, line 450

    expect(poetryCall?.env?.POETRY_VIRTUALENVS_CREATE).toBe("false");

  • Agent instructions

    Pass

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

  • Obfuscation

    Note

    a file was over the read cap and was not fully read. the file cap was reached before every file was read.

    OBFUSCATION_FILE_OVER_READ_CAP OBFUSCATION_FILE_CAP_REACHED

    agents/meeting-transcript-to-action-items/fixtures/sample.wav, line 1

    RIFF�}WAVEfmt �>}LISTINFOISFT

    packages/schema/src/errors.test.ts, line 1

    import { describe, expect, it } from "vitest";

  • 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 b1d963b36174. requests shell access. No manifest field names shell or command execution. install fetches a script from the network. can reach a host that is not written as a fixed address. can reach example.com. The description does not name that host. can reach evil.invalid. The description does not name that host. can reach 1.1.1.1. The description does not name that host. can reach cdn.jsdelivr.net. The description does not name that host. reads a credential or environment file. a file was over the read cap and was not fully read. the file cap was reached before every file was read.

Date and source

Date checked:

View source

github.com

Commit graded: b1d963b36174c159cad07fe91cef0b3c7bbdb7d7

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