math-rendering-macro-injection SKILL.md skillA
math-rendering-macro-injection from dreadnode/capabilities is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dreadnode/capabilities/math-rendering-macro-injection@git:20260814.2a9dc38Pins git:20260814.2a9dc38 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dreadnode/capabilities
- Path
capabilities/web-security/skills/math-rendering-macro-injection/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260814.2a9dc38, committed Aug 14, 2026
- Size
- 6,273 bytes
- Repository stars
- 22
- License
- MIT
Abuse user-controlled TeX/LaTeX macros in MathJax and KaTeX renderers to override built-in operators, spoof rendered content, inject links/scripts, or exhaust the renderer. Use when an app renders user-supplied math (GitHub-style Markdown math, wikis, comments, chat, LMS, note apps) via MathJax or KaTeX.
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
# Math Rendering Macro Injection Apps that render user-supplied mathematics (`$...$`, `$$...$$`, ```` ```math ````) hand attacker text to a TeX processor — usually **MathJax** or **KaTeX**. TeX is a full macro language. If the app enables macro-definition packages on untrusted input, an attacker can redefine what the renderer draws, spoof content in another user's document, inject links, or wedge the renderer. This is primarily a **content-integrity / UI-redress** class (and sometimes XSS or DoS), not classic reflected XSS. It matters most where rendered math appears in shared, trusted surfaces: repo READMEs, issues/comments, wiki pages, knowledge bases, and chat. ## When To Use - The target renders math notation (you see `\(`, `\[`, `$$`, KaTeX/MathJax script tags, `.MathJax`/`.katex` DOM classes). - The math is derived from untrusted input (comments, issues, profile fields, wiki, chat messages). - You want to demonstrate impact beyond "it renders" — override, spoof, link injection, or DoS. ## Fingerprint the Renderer | Signal | Renderer | |---|---| | `mathjax`/`tex-*.js`, `window.MathJax`, `.MathJax` / `mjx-container` DOM | MathJax (v2 or v3) | …
Read the whole file at its exact version.
How to install
mdr add dreadnode/capabilities/math-rendering-macro-injection@sha256:af7c14463fc5355cThe line at the top of this page pins the label git:20260814.2a9dc38, 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.
[](https://markdownregistry.com/a/art_35jpdoh6qxtqyvm5)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 14, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6273 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
dreadnode/capabilities · 22 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_35jpdoh6qxtqyvm5 GET https://markdownregistry.com/api/v1/resolve?ref=dreadnode/capabilities/math-rendering-macro-injection GET https://markdownregistry.com/api/v1/blob/af7c14463fc5355c3ae82587fdfe8ef3b3c0abe083a053777addde5505f835a1
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.