security-bounty-hunter

security-bounty-hunter is a skill for Claude Code, Codex from pekral/cursor-rules. It costs 58 tokens per session (1,561 once invoked), scanned A, original, MIT.

A read-only security investigation that hunts for exploitable, remotely reachable vulnerabilities in PHP and Laravel codebases.

In plain words
What is it for?
Use it to investigate a whole codebase for unknown vulnerabilities, create safe minimal proof-of-concepts, and prepare findings for responsible disclosure or a bug-bounty report.
Why use it?
It focuses attention on attack paths that real users can reach and filters out low-impact theoretical issues.

Skill for Claude CodeCodex

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

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.

agentmods
npx agentmods add skills/pekral/cursor-rules/security-bounty-hunter
Any agent
npx skills add pekral/cursor-rules --skill security-bounty-hunter
Clone the repo
git clone --depth 1 https://github.com/pekral/cursor-rules

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 security-bounty-hunter

README.md
[![agentmods](https://agentmods.dev/badge/skills/pekral/cursor-rules/security-bounty-hunter.svg)](https://agentmods.dev/skills/pekral/cursor-rules/security-bounty-hunter)
Your own site
<a href="https://agentmods.dev/skills/pekral/cursor-rules/security-bounty-hunter"><img src="https://agentmods.dev/badge/skills/pekral/cursor-rules/security-bounty-hunter.svg" alt="Measured on agentmods" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,561 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00058 $0.01561
Opus 5 $0.00029 $0.00781
Sonnet 5 $0.00012 $0.00312
Haiku 4.5 $0.00006 $0.00156

Measured 2d ago against content hash 5ab39bf306eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

security-bounty-hunter scanned grade A with 0 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 2d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/security-bounty-hunter/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Bounty Hunter

Constraints

  • Apply @rules/security/backend.md and @rules/security/frontend.md
  • If the project uses Laravel, also apply @rules/laravel/laravel.mdc
  • Stack assumed: Laravel 11 / PHP 8.3, Filament, Livewire, Alpine.js, Blade, MySQL, Redis
  • Read-only investigation — never modify, stage, commit, or push code; output is the finding report only
  • Never run an exploit against infrastructure you are not authorized to test; keep PoCs minimal and safe
  • Hard limits: this file stays <= 500 lines and <= 5000 tokens

Purpose

Find unknown, exploitable bugs reachable from a real network or user boundary, and write them up to a standard a bounty program will accept. Bias toward "does this actually pay?" over "is this theoretically unsafe?".

How this differs from neighbors:

  • @skills/security-review/SKILL.md reviews a diff against best practices; this skill hunts unknown exploitable bugs across the whole reachable surface.
  • @skills/security-threat-analysis/SKILL.md remediates a known advisory/CVE; this skill discovers the unknown one.

Use when

  • Sweeping a repository for exploitable vulnerabilities
  • Preparing a Huntr / HackerOne / program submission
  • Triage where the question is "is this reportable?" not "is this tidy?"

In-Scope Patterns (mapped to PHP/Laravel sinks)

Pattern CWE PHP/Laravel sink to chase Impact
SSRF via user-controlled URL CWE-918 Http::get($userUrl), Guzzle, file_get_contents($userUrl) internal network / cloud metadata
SQL injection CWE-89 whereRaw/orderByRaw/havingRaw/DB::statement/DB::raw with interpolation data exfiltration, auth bypass
Auth / access bypass CWE-287/639 gaps in middleware, policy/gate, Livewire actions, IDOR on route-model binding unauthorized data access
Unsafe deserialization CWE-502 unserialize($userInput), unsigned cookie/cache payloads, ShouldQueue from untrusted source RCE / object injection
Path traversal CWE-22 Storage::get/disk()->get, file_get_contents, download routes with ../ in path arbitrary file read/write
Command injection CWE-78 exec/shell_exec/system/proc_open, Process::run("... {$input}") code execution
XSS (auto-triggered) CWE-79 {!! $userInput !!}, Alpine x-html, raw JSON in <script> session/admin theft
Mass-assignment to privileged column CWE-915 $guarded = [] or fillable exposing role/is_admin + create($request->all()) privilege escalation

Read the full file on GitHub · 114 lines

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. 2d ago First seen · 114 lines · 58 tokens per session scan A 5ab39bf306eb

Subscribe to this mod's changes

security-bounty-hunter is a skill published in the GitHub repository pekral/cursor-rules (6 stars, last pushed 6d ago), licensed MIT. It adds 58 tokens to every session and 1,561 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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