testing-client-side-dom-vulnerabilities SKILL.md skillA
testing-client-side-dom-vulnerabilities from unboundcompute/security-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add unboundcompute/security-agent-skills/testing-client-side-dom-vulnerabilities@git:20260816.e670f56Pins git:20260816.e670f56 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- unboundcompute/security-agent-skills
- Path
skills/testing-client-side-dom-vulnerabilities/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260816.e670f56, committed Aug 16, 2026
- Size
- 6,602 bytes
- Repository stars
- 26
- License
- MIT
Test the vulnerabilities that live entirely in the browser, where the server is never the sink: DOM-based cross-site scripting from client-side sinks, DOM clobbering, prototype pollution that corrupts application logic, unsafe cross-window messaging, client-side path and open-redirect handling, and cross-origin information leaks. Use when reviewing a single-page app, heavy client-side JavaScript, a browser extension, or any code that reads attacker-influenceable input and writes it into the…
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
# Testing client-side DOM vulnerabilities: the server never sees it A whole class of vulnerabilities never touches the server: the tainted input is read and the dangerous action taken entirely in the browser, so server-side review and server logs see nothing. The source is a URL fragment, a message, a piece of markup, or a global the attacker can influence; the sink is a script execution, a corrupted object, or a leaked cross-origin fact. Testing them means tracing taint inside the page, from client source to client sink. ## When to use - You are reviewing a single-page app, heavy client-side JavaScript, or a browser extension. - Code reads the URL, a message, storage, or the DOM and writes it into a sink. - The server sees none of the payload, so server-side testing found nothing. ## Scope check Test pages and extensions you own or are authorized to test. Use benign markers and your own browser session. If you can't name the authorization, stop. ## The loop 1. **Enumerate client-side sources and sinks.** List where the page reads attacker-influenceable input in the browser (the URL and its fragment, message …
Read the whole file at its exact version.
How to install
mdr add unboundcompute/security-agent-skills/testing-client-side-dom-vulnerabilities@sha256:2abd35440adc5880The line at the top of this page pins the label git:20260816.e670f56, 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_ix5i74h7prjuyhw7)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 16, 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 (6602 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
unboundcompute/security-agent-skills · 26 stars · license MIT · pushed 2026-09-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ix5i74h7prjuyhw7 GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/testing-client-side-dom-vulnerabilities GET https://markdownregistry.com/api/v1/blob/2abd35440adc5880e9e5a2d74f5547c8a743fbfbacb0585e287041702dabb686
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.