path-traversal SKILL.md skillA

path-traversal from dannyan/secguard-clang is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add dannyan/secguard-clang/path-traversal@git:20261019.3855413

Pins git:20261019.3855413 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
dannyan/secguard-clang
Path
extension/shared/skills/path-traversal/SKILL.md
Versions recorded
5
Latest version
git:20261019.3855413, committed Oct 19, 2026
First version recorded
Sep 13, 2026
Size
4,806 bytes
Repository stars
25
License
Apache-2.0

Classify path-traversal evidence — a filesystem sink receiving a non-literal path argument. Maps to CWE-22.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

## Path Traversal Analysis (CWE-22)

**What this is:** a filesystem call (`fopen`/`open`/`openat`/`opendir`/
`unlink`/`remove`/`rename`) receives a path that is **not a fixed string
literal**. If an attacker can control that path, they can use `../` to escape
the intended directory and read / overwrite / delete an arbitrary file.

### Evidence Pattern
A path-traversal candidate has:
- **path_traversal**: a filesystem sink whose path argument is not a string literal
- **path_arg**: the path argument expression of the sink call
- **call_path**: the function is reachable from an entry point
- **taint_source** (when the pipeline proved it): a user-controlled value
  (getenv / argv / recv / scanf / fgets …) reaches the path argument
- **callsite_census** (when the path argument is a function parameter): the
  in-tree call-site argument census for that parameter — `all-literal` means
  every caller passes a compile-time constant

### Hint Tokens (Verdict Basis)

| Token | Meaning | Your action |
|-------|---------|-------------|
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add dannyan/secguard-clang/path-traversal@sha256:b4262334a9e32338

The line at the top of this page pins the label git:20261019.3855413, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_577icsjudcp53hvd.svg)](https://markdownregistry.com/a/art_577icsjudcp53hvd)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Sep 13, 2026 and Oct 19, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
git:20261019.3855413 latest2026-10-19 3855413 4,806 BA view · diff
git:20261017.a78401f2026-10-17 a78401f 3,546 BA view · diff
git:20261016.fb3b1562026-10-16 fb3b156 3,138 BA view · diff
git:20260914.1ef9fbc2026-09-14 1ef9fbc 3,076 BA view · diff
git:20260913.46c999d2026-09-13 46c999d 3,148 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (4806 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

dannyan/secguard-clang · 25 stars · license Apache-2.0 · pushed 2026-10-22 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_577icsjudcp53hvd
GET https://markdownregistry.com/api/v1/resolve?ref=dannyan/secguard-clang/path-traversal
GET https://markdownregistry.com/api/v1/blob/b4262334a9e32338699df98fd3cc3ba0c58dbc2569f57e7f139c9c83caa9b9cd

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in dannyan/secguard-clang

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