hunt-dom SKILL.md skillF
hunt-dom from novaestellar/novahaku is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add novaestellar/novahaku/hunt-dom@git:20260910.546fe86Pins git:20260910.546fe86 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- F, 15 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- novaestellar/novahaku
- Path
testing/hunt/hunt-dom/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260910.546fe86, committed Sep 10, 2026
- First version recorded
- Sep 3, 2026
- Size
- 16,556 bytes
- Repository stars
- 28
- License
- MIT
Hunt client-side DOM vulnerabilities — DOM Clobbering (overwrite JS globals via HTML injection), PostMessage hijacking (missing origin check), Service Worker abuse (intercept requests from same-origin script), CSS Injection/Exfiltration (attribute selectors → token char-by-char via OOB), client-side template injection, dangerouslySetInnerHTML. Grounded in named public research: Gareth Heyes / PortSwigger DOM-clobbering + DOM-Invader, Michał Bentkowski DOMPurify clobbering bypasses, jQuery…
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
# HUNT-DOM — DOM Clobbering / PostMessage / Service Worker / CSS Exfil ## Crown Jewel Targets DOM-based attacks execute in the victim's browser — the server often never sees the payload, so WAFs and server-side input filters do not apply. PostMessage missing-origin-check = cross-origin token theft with no XSS needed. **Highest-value chains:** - **DOM Clobbering → DOM-XSS / auth bypass** — HTML *markup* injection (no `<script>`) overwrites a JS global like `window.config` or shadows `document.getElementById`, and the app later treats that value as a URL/code → sink fires under a markup-only injection where script is filtered. - **PostMessage no origin check → session theft / DOM-XSS** — a `message` handler that trusts `event.data` without validating `event.origin` lets an attacker iframe/opener drive privileged actions or feed a sink. - **Service Worker abuse** — register a **same-origin** SW script (reachable because of an upload / open-redirect / path the target serves) via stored XSS → intercept all in-scope `fetch` → persistent credential capture. …
Read the whole file at its exact version.
How to install
mdr add novaestellar/novahaku/hunt-dom@sha256:87c212c13ed2f479The line at the top of this page pins the label git:20260910.546fe86, 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_t2mk66pen4pwq4fh)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Sep 3, 2026 and Sep 10, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260910.546fe86 latest | 2026-09-10 | 546fe86 | 16,556 B | F | view · diff |
| git:20260903.29924dd | 2026-09-03 | 29924dd | 16,568 B | F | view · diff |
| git:20260903.fa855c4 | 2026-09-03 | fa855c4 | 16,539 B | F | view |
Audit of the latest version
- FAIL, critical: No text hidden with inline styles (matched: style="display:none)
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (16556 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 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
novaestellar/novahaku · 28 stars · license MIT · pushed 2026-09-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_t2mk66pen4pwq4fh GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/hunt-dom GET https://markdownregistry.com/api/v1/blob/87c212c13ed2f479c265d46df7c8f478976ba70de5b58ff2760f60c5b17b9c75
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.