testing-for-xss-vulnerabilities

Inject payloads and analyze responses to detect XSS vulnerabilities in web applications.

2|Updated Apr 14, 2026
One-click install
npx skills add https://github.com/Acczdy/MoZiSec --skill testing-for-xss-vulnerabilities
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: testing-for-xss-vulnerabilities
Source: https://github.com/Acczdy/MoZiSec/tree/main/penetration-testing/.claude/skills/testing-for-xss-vulnerabilities
Command: npx skills add https://github.com/Acczdy/MoZiSec --skill testing-for-xss-vulnerabilities

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires requests, urllib3, and includes scripts (resource) and references (resource) components.

What problem does it solve?

Automates detection of XSS vulnerabilities across reflected, stored, and DOM-based contexts, enabling security teams to demonstrate and remediate weaknesses before deployment.

Core Features & Use Cases

  • Automated XSS discovery across reflection, stored, and DOM contexts with context-aware payloads.
  • CSP and header analysis with reporting and remediation guidance.
  • Generates structured reports suitable for security dashboards and remediation planning.
  • Use case: Pre-release security assessment of web apps and SPAs, including authenticated testing scenarios.

Quick Start

Run the XSS testing agent against the target URL with optional authentication and endpoint configuration to generate an xss_report.json.

Frequently Asked Questions about testing-for-xss-vulnerabilities

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I automate XSS vulnerability testing for a single-page application?

Automate XSS vulnerability testing for SPAs by injecting context-aware payloads into input points and analyzing DOM-based rendering. The agent script evaluates reflection contexts and client-side execution to identify DOM XSS across modern single-page architectures.

Can I test for stored XSS vulnerabilities in authenticated web applications?

Yes, you can test for stored XSS in authenticated web apps by providing an optional bearer token. Configure specific endpoints for stored XSS validation, and the agent will inject payloads and analyze stored rendering within those authenticated testing scenarios.

How does automated payload injection detect reflected XSS vulnerabilities?

Automated payload injection detects reflected XSS by submitting context-aware payloads into web application inputs and analyzing server responses for unescaped reflection. It evaluates reflection contexts to determine if injected scripts execute within the rendered HTML.

Does the tool check Content Security Policy headers during web security testing?

Yes, the tool checks Content Security Policy headers during web security testing. The local agent script performs CSP and header analysis, providing security teams with specific reporting and remediation guidance to strengthen application defenses against cross-site scripting.

What format does the vulnerability report use for security dashboards?

The vulnerability report uses JSON format, generating a structured xss_report.json file. This structured output contains analysis results and remediation guidance suitable for direct integration into security dashboards and remediation planning workflows.

Do I need network access to the target URL for XSS testing?

Yes, network access to the target URL is required for XSS testing. The agent injects payloads and analyzes responses against the live web application, requiring direct connectivity to evaluate reflection, stored rendering, and DOM-based execution contexts.