Claude Code, Plugin
Backend Security Skill
Backend Security Skill, a plugin listed in the PlugVet directory.
Compatibility: Not stated.
Grade C
One Medium finding. Read the findings before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit 10e53c9de8d4, unchanged since the check below.
PERMISSION_SHELL_UNDECLARED
Why this grade
- PERMISSION_SHELL_UNDECLARED Medium
Runs shell commands that the manifest or description does not mention.
plugins/backend-security/skills/backend-security/references/injection.md, line 25
- `child_process.exec`, `execSync`, `spawn(..., {shell: true})`; Python `os.system`, `subprocess` with `shell=True`; Ruby backticks/`system` with interpolation; Go `exec.Command("s
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.
PERMISSION_SHELL_UNDECLARED
plugins/backend-security/skills/backend-security/references/injection.md, line 25
- `child_process.exec`, `execSync`, `spawn(..., {shell: true})`; Python `os.system`, `subprocess` with `shell=True`; Ruby backticks/`system` with interpolation; Go `exec.Command("s
plugins/backend-security/skills/backend-security/references/nodejs.md, line 34
- `child_process.exec`/`execSync` build a shell string → prefer `execFile`/`spawn` with args array; flag `spawn(..., { shell: true })`.
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
plugins/backend-security/skills/backend-security/references/injection.md, line 40
- `fetch`/`axios`/`requests.get`/`http.Get` where any part of the URL (host, path, or full URL) comes from user input - webhooks, "import from URL", PDF/image fetchers, link previe
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
AGENTS.md, line 60
- **Hardcoded secrets**: scan source, config, tests, history for API keys, private keys, connection strings, tokens (`AKIA…`, `-----BEGIN … PRIVATE KEY`, `sk_live_`, `ghp_`, `xox[b
AGENTS.md, line 68
- **Docker/CI**: non-root `USER`; no secrets baked via `ARG`/`ENV`/`COPY .env` (they persist in layers); pinned base images; `.dockerignore` excludes `.env`/`.git`. CI: no secrets
plugins/backend-security/skills/backend-security/references/deps.md, line 51
- `.env*` - gitignored, never committed historically (`git log --all --oneline -- .env`), no `.env.production` with real values in the repo
Show more
plugins/backend-security/skills/backend-security/references/infra.md, line 9
- `.env` files: confirm they're in `.gitignore` AND check history - `git log --all --oneline -- .env` (gitignore doesn't remove already-committed files). A secret ever committed is
plugins/backend-security/skills/backend-security/references/infra.md, line 52
- Secrets via `ARG`/`ENV` at build time or `COPY .env` - baked into image layers forever. Use runtime env/secret mounts; check `.dockerignore` excludes `.env`, `.git`.
plugins/backend-security/skills/backend-security/references/nodejs.md, line 41
- `express.static` with `dotfiles: 'allow'` or pointed at a directory containing `.env`/`.git`.
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 10e53c9de8d4. requests shell access. No manifest field names shell or command execution. can reach a host that is not written as a fixed address. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 10e53c9de8d44af941c80347c76771f9bbd1fb86
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