file-access-vuln

# 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](../hack-path-traversal-lfi/SKILL.md): path traversal, file read, wrapper abuse, include chains - Upload Insecure Files: 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](../hack-injection-checking/SKILL.md) - [business-logic-vuln](../hack-business-logic-vuln/SKILL.md)