unboundcompute/security-agent-skills · skills/hunting-server-side-rendering-and-svg-image-abuse/SKILL.md

hunting-server-side-rendering-and-svg-image-abuse skillA

hunting-server-side-rendering-and-svg-image-abuse is agent-read markdown (skill) from unboundcompute/security-agent-skills: Hunt abuse of server-side renderers of user-supplied markup, such as headless-browser PDF or screenshot generation, SVG rasterization, thumbnailers, and chart or document renderers, where the renderer fetches remote or local resources, follows redirects, executes embedded script, or reads local files while producing output. Use when untrusted HTML, SVG, or a URL is handed to a rendering component server-side. Covers server-side request forgery including to cloud metadata, local file disclosure t.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add unboundcompute/security-agent-skills/hunting-server-side-rendering-and-svg-image-abuse@git:20260903.6dac719
Exact content
mdr add unboundcompute/security-agent-skills/hunting-server-side-rendering-and-svg-image-abuse@sha256:fa5503fb0c053e90

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_lhtjf5kwswgkgqtu.svg)](https://markdownregistry.com/a/art_lhtjf5kwswgkgqtu)

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Versions

versioncommittedcommitsizeaudit
git:20260903.6dac719 latest2026-09-03 6dac719 10,292 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (10292 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

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_lhtjf5kwswgkgqtu
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-server-side-rendering-and-svg-image-abuse
GET https://markdownregistry.com/api/v1/blob/fa5503fb0c053e90277a60d29755e2c357d02de1a4b35956967e60b9531a9369

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.