Menu

Individual skill

testing-websocket-api-security

0upvotes

Tests WebSocket API implementations for missing upgrade-handshake authentication, Cross-Site WebSocket Hijacking (CSWSH), message injection, insufficient input validation, message-flooding DoS, and information leakage, using Burp Suite's WebSocket interception and the wscat CLI to craft malicious payloads. Use for real-time API penetration testing or CSWSH/authorization-bypass assessments on WebSocket channels.

skills/testing-websocket-api-security/SKILL.md

Read pinned source

Source commit 54a798831d2266a3ca61ce68a7acb80b81160d57

What was checked

Matches the observed repository HEAD
Yes
Scanner rules are current
Yes
Repository scan complete
No
Skill scan complete
No
Observed behavior
Network or broad shell
Last checked
Nov 9, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

Install this skill

Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.

An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.

Repository context

Repository stars (not skill ratings)
35,849
Repository last updated
Aug 31, 2026
License
Apache-2.0

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

Files and excerpt

File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.

Browse files
Read excerpt
# Testing WebSocket API Security

## When to Use

- Assessing real-time communication APIs that use WebSocket (ws://) or Secure WebSocket (wss://) protocols
- Testing for Cross-Site WebSocket Hijacking (CSWSH) where an attacker's page connects to a legitimate WebSocket server
- Evaluating authentication and authorization enforcement on WebSocket connections and messages
- Testing input validation on WebSocket message payloads for injection vulnerabilities
- Assessing WebSocket implementations for denial-of-service through message flooding or oversized frames

**Do not use** without written authorization. WebSocket testing may disrupt real-time services and affect other connected users.

## Prerequisites

- Written authorization specifying the WebSocket endpoint and testing scope
Back to top