Hunt WebSocket vulnerabilities — Cross-Site WebSocket Hijacking (CSWSH), missing/weak Origin validation on the WS handshake, no per-message authentication, message tampering, socket.io namespace/room authorization bypass, and handshake-layer Upgrade smuggling. Use when target has WebSocket endpoints (ws:// or wss://), socket.io / SignalR / Phoenix Channels, real-time features, chat, live dashboards, notifications, or trading platforms.
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2 findings: 1 critical severity, 1 high severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.
This document is an offensive WebSocket attack playbook with explicit PoC code and instructions to hijack authenticated sockets, exfiltrate victim data to OAST/Collaborator endpoints, perform privileged/frame and namespace abuse, and conduct handshake smuggling — content is clearly actionable malicious guidance for abuse.
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
The skill’s examples and test commands instruct embedding session cookies (e.g., Cookie: session=YOUR_SESSION / SESSION / LOW_PRIV_SESSION) directly into CLI/WebSocket requests, which would require the LLM or agent to accept and output secret/session values verbatim — a high exfiltration risk.
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