Automated summary
This skill provides techniques to identify and exploit Cross-Site Scripting (XSS) vulnerabilities and clickjacking attacks in web applications.
Strengths
- Covers both reflected, stored, and DOM-based XSS
- includes clickjacking
- lists tools like Burp Suite, Dalfox, and XSStrike
- provides quick reference table.
Limitations
- Requires a browser and Burp Suite setup
- may not cover advanced bypass techniques
- assumes basic web security knowledge.
Use when performing web application security assessments or penetration testing focusing on client-side injections.
Do not use for server-side vulnerabilities like SQL injection or for applications with strict Content Security Policy.
Security analysis
SafeThis file is a non-executable overview of XSS attack types; it does not contain any commands or executable instructions. It only references subskills and declares tools for potential future use. No immediate risk.
No concerns found
How this analysis is madeExamples
Test the URL parameter 'search' for reflected XSS by injecting '<script>alert(1)</script>'.Check if the target website is vulnerable to clickjacking by testing if it can be loaded in an iframe.name: xss description: Skills for Cross-Site Scripting (XSS) and client-side injection attacks including clickjacking. compatibility: Requires browser and Burp Suite allowed-tools: burpsuite dalfox xsstrike metadata: category: web
Cross-Site Scripting (XSS)
Injection of malicious scripts into web pages viewed by other users.
Skills
- XSS - Cross-Site Scripting attacks
- Clickjacking - UI redressing attacks
Quick Reference
| Type | Location | Example |
|------|----------|---------|
| Reflected | URL params | <script>alert(1)</script> |
| Stored | Database | Persistent payload |
| DOM | Client JS | #<img onerror=alert(1)> |
From the file to a first result
The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.
View the source and supporting filesThis download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.
1. Download the file
Download SKILL.mdFrom the root of a test project, save the file as .skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.
Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.
mkdir -p '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/xss-injection-and-client-side-attacks-mm8o51qu/download' --output '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md.part' && mv '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md.part' '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md'2. Check prerequisites
Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.
Environment declared by the author: Requires browser and Burp Suite
Tools declared by the author (check availability in your agent): burpsuite dalfox xsstrike
Original excerpt: Quick Reference
| Type | Location | Example |
|---|---|---|
| Reflected | URL params | <script>alert(1)</script> |
| Stored | Database | Persistent payload |
| DOM | Client JS | #<img onerror=alert(1)> |
The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.
3. Load the skill
After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.
Claude Code
test -f '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md' && test -s '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/xss' && cp -R '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu' '.claude/skills/xss'Cursor
test -f '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md' && test -s '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md' && mkdir -p '.cursor/skills' && test ! -e '.cursor/skills/xss' && cp -R '.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu' '.cursor/skills/xss'OpenSkills
OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.
Official OpenSkills installationopenskills install './.skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu'openskills read 'xss-injection-and-client-side-attacks-mm8o51qu'Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.
For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.
openskills syncManual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.
4. Try a first task
Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:
Read .skill-downloads/xss-injection-and-client-side-attacks-mm8o51qu/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.
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