security-bounty-hunter

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Translated

Hunt for exploitable, bounty-worthy security issues in repositories. Focuses on remotely reachable vulnerabilities that qualify for real reports instead of noisy local-only findings.

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Sourceaffaan-m/everything-claude-code

Added on2026-04-06

NPX Install

npx skill4agent add affaan-m/everything-claude-code security-bounty-hunter

SKILL.md Content

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Security Bounty Hunter

Use this when the goal is practical vulnerability discovery for responsible disclosure or bounty submission, not a broad best-practices review.

When to Use

Scanning a repository for exploitable vulnerabilities
Preparing a Huntr, HackerOne, or similar bounty submission
Triage where the question is "does this actually pay?" rather than "is this theoretically unsafe?"

How It Works

Bias toward remotely reachable, user-controlled attack paths and throw away patterns that platforms routinely reject as informative or out of scope.

In-Scope Patterns

These are the kinds of issues that consistently matter:

Pattern	CWE	Typical impact
SSRF through user-controlled URLs	CWE-918	internal network access, cloud metadata theft
Auth bypass in middleware or API guards	CWE-287	unauthorized account or data access
Remote deserialization or upload-to-RCE paths	CWE-502	code execution
SQL injection in reachable endpoints	CWE-89	data exfiltration, auth bypass, data destruction
Command injection in request handlers	CWE-78	code execution
Path traversal in file-serving paths	CWE-22	arbitrary file read or write
Auto-triggered XSS	CWE-79	session theft, admin compromise

Skip These

These are usually low-signal or out of bounty scope unless the program says otherwise:

Local-only
```
pickle.loads
```
,
```
torch.load
```
, or equivalent with no remote path
```
eval()
```
or
```
exec()
```
in CLI-only tooling
```
shell=True
```
on fully hardcoded commands
Missing security headers by themselves
Generic rate-limiting complaints without exploit impact
Self-XSS requiring the victim to paste code manually
CI/CD injection that is not part of the target program scope
Demo, example, or test-only code

Workflow

Check scope first: program rules, SECURITY.md, disclosure channel, and exclusions.
Find real entrypoints: HTTP handlers, uploads, background jobs, webhooks, parsers, and integration endpoints.
Run static tooling where it helps, but treat it as triage input only.
Read the real code path end to end.
Prove user control reaches a meaningful sink.
Confirm exploitability and impact with the smallest safe PoC possible.
Check for duplicates before drafting a report.

Example Triage Loop

bash

semgrep --config=auto --severity=ERROR --severity=WARNING --json

Then manually filter:

drop tests, demos, fixtures, vendored code
drop local-only or non-reachable paths
keep only findings with a clear network or user-controlled route

Report Structure

markdown

## Description
[What the vulnerability is and why it matters]

## Vulnerable Code
[File path, line range, and a small snippet]

## Proof of Concept
[Minimal working request or script]

## Impact
[What the attacker can achieve]

## Affected Version
[Version, commit, or deployment target tested]

Quality Gate

Before submitting:

The code path is reachable from a real user or network boundary
The input is genuinely user-controlled
The sink is meaningful and exploitable
The PoC works
The issue is not already covered by an advisory, CVE, or open ticket
The target is actually in scope for the bounty program