websocket-security

Analyze WebSocket handshakes and identify common security vulnerabilities.

Updated Jun 11, 2026

Search Tags:#WebSocket security #CSWSH #WebSocket hijacking #WebSocket protocol #WebSocket testing

Ready to run

npx skills add https://github.com/utsavthakur/agenticskills --skill websocket-security-utsavthakur

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: websocket-security
Source: https://github.com/utsavthakur/agenticskills/tree/main/websocket-security
Command: npx skills add https://github.com/utsavthakur/agenticskills --skill websocket-security-utsavthakur

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires wsrepl, ws-harness, burpsuite, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill addresses the complexities of WebSocket security by identifying and mitigating common vulnerabilities such as cross-site WebSocket hijacking (CSWSH) and securing real-time channels.

Core Features & Use Cases

WebSocket Protocol Basics: Understand the WebSocket handshake, protocol versions, and message framing.
Cross-Site WebSocket Hijacking (CSWSH): Analyze and prevent CSRF-like attacks over persistent WebSocket connections.
Testing Tools Integration: Utilize tooling like wsrepl, ws-harness, and Burp Suite to simulate attacks and validate security controls.
Vulnerability Identification: Detect issues like missing origin validation, rate limiting, and injection flaws in message bodies.

Quick Start

Analyze the security of a WebSocket endpoint with the 'websocket-security' skill.

Frequently Asked Questions about websocket-security

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

FAQPage Schema

How do I test for cross-site WebSocket hijacking vulnerabilities?▼

Cross-site WebSocket hijacking (CSWSH) testing simulates CSRF-like attacks over persistent connections to identify missing origin validation. This skill analyzes the WebSocket handshake to detect and mitigate these vulnerabilities in real-time channels.

What is the best way to secure WebSocket handshake and message framing?▼

Securing the WebSocket handshake requires validating origins and analyzing protocol versions and message framing. This skill provides comprehensive checks to detect missing origin validation, rate limiting issues, and injection flaws in message bodies.

How do I use Burp Suite to test WebSocket API security?▼

Burp Suite integrates with WebSocket testing tools like wsrepl and ws-harness to simulate attacks and validate security controls. This skill leverages these frameworks to analyze real-time WS-backed APIs and identify vulnerabilities.

Can I detect injection flaws in WebSocket message bodies?▼

Yes, detecting injection flaws in WebSocket message bodies involves analyzing message framing and validating inputs. This skill identifies these vulnerabilities along with missing origin validation and rate limiting issues in WebSocket communications.

Do I need specialized tools to analyze WebSocket protocol security?▼

Yes, analyzing WebSocket protocol security requires tooling like wsrepl, ws-harness, and web security frameworks such as Burp Suite. These tools simulate attacks and validate security controls for chat, notifications, and WS-backed APIs.

When should I perform WebSocket security testing on my application?▼

WebSocket security testing is necessary when your application utilizes real-time channels for chat, notifications, or WS-backed APIs. This skill analyzes the WebSocket handshake to secure communications and mitigate common vulnerabilities.