# File Access Vuln

> >-

- **Type:** Skill
- **Install:** `agentstack add skill-yaklang-hack-skills-file-access-vuln`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [yaklang](https://agentstack.voostack.com/s/yaklang)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [yaklang](https://github.com/yaklang)
- **Source:** https://github.com/yaklang/hack-skills/tree/main/skills/file-access-vuln

## Install

```sh
agentstack add skill-yaklang-hack-skills-file-access-vuln
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# File Access Router

This is the routing entry point for filesystem paths, download endpoints, upload pipelines, and file preview handling.

## When to Use

- Parameters, filenames, download endpoints, or import flows influence file paths
- The target supports upload, preview, transcoding, extraction, sharing, download, or proxied file access
- You need to decide whether this is path traversal/LFI or an upload-validation/processing-chain issue

## Skill Map

- [Path Traversal LFI](../path-traversal-lfi/SKILL.md): path traversal, file read, wrapper abuse, include chains
- [Upload Insecure Files](../upload-insecure-files/SKILL.md): upload validation, storage paths, processing chains, overwrite risk, preview/share boundaries

## Recommended Flow

1. First identify whether the entry point is a path parameter, download endpoint, or upload workflow
2. Then locate whether the issue appears in accept, store, process, or serve stages
3. Small path-chain and upload-bypass samples are merged into the main topic skills; no separate payload entry is needed

## Related Categories

- [injection-checking](../injection-checking/SKILL.md)
- [business-logic-vuln](../business-logic-vuln/SKILL.md)

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [yaklang](https://github.com/yaklang)
- **Source:** [yaklang/hack-skills](https://github.com/yaklang/hack-skills)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-yaklang-hack-skills-file-access-vuln
- Seller: https://agentstack.voostack.com/s/yaklang
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.