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RedHatProductSecurity
RedHatProductSecurityOFFICIAL
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client-side-security

Review browser-facing code for security vulnerabilities and compliance.

47|5|Updated Apr 25, 2026
Search Tags:#xss#clickjacking#csp#web-security#csrf#httponly
One-click install
npx skills add https://github.com/RedHatProductSecurity/prodsec-skills --skill client-side-security
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: client-side-security
Source: https://github.com/RedHatProductSecurity/prodsec-skills/tree/main/module/skills/client-side-security
Command: npx skills add https://github.com/RedHatProductSecurity/prodsec-skills --skill client-side-security

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps developers prevent security breaches such as XSS, CSRF, and clickjacking in web applications by providing best practices and sanitization techniques.

Core Features & Use Cases

  • XSS Prevention: Advises on sanitizing user input, using safe DOM methods, and implementing content security policies.
  • CSRF Defense: Recommends secure cookie attributes, synchronizer tokens, and origin verification to prevent cross-site requests.
  • Use Case: A developer reviewing a web app's security posture can employ this Skill to identify weaknesses in input handling or header settings, ensuring data integrity and user safety.

Quick Start

Ask the AI to review your website's client-side code for common security issues and get recommended fixes.

Frequently Asked Questions about client-side-security

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

FAQPage Schema
How do I prevent DOM-based XSS vulnerabilities in web applications?▼

To prevent DOM-based XSS, sanitize user input, use safe DOM methods, and enforce content security policies. This mitigates browser-facing code vulnerabilities by ensuring strict input validation and blocking unauthorized script execution.

What is the best way to configure security headers for clickjacking and CSRF defense?▼

The best way to defend against clickjacking and CSRF is configuring secure header policies, setting proper cookie attributes like HttpOnly, and implementing synchronizer tokens with origin verification to prevent cross-site requests.

How does Content Security Policy work to stop cross-site scripting?▼

Content Security Policy (CSP) stops cross-site scripting by defining approved sources for scripts and resources. Enforcing CSP compliance ensures browsers only execute trusted third-party scripts, preventing unauthorized data leaks and injections.

Do I need specific cookie attributes to secure browser-based applications against data leaks?▼

Yes, secure cookie attributes are required to prevent data leaks. Setting HttpOnly and secure flags protects session integrity against cross-site request forgery and unauthorized script access.

How to review client-side code for common web security vulnerabilities?▼

Review client-side code for security vulnerabilities by analyzing input validation routines, header configurations, and third-party script handling. This ensures compliance with CSP and identifies weaknesses in data sanitization.

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