Individual skill
websocket-api-security
WebSocket API security testing — upgrade authentication and Origin/CSWSH hijacking, per-message authorization bypass, frame injection, token lifecycle on reconnect, and unthrottled resource consumption on the WS path
internal/tools/skills/data/api-security/websocket-api-security/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Yes
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- Yes
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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- 1,319
- Repository last updated
- Nov 8, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- security Derived category
- testing Derived category
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# WebSocket API Security
## Purpose
Test real-time WebSocket APIs for handshake authorization gaps (CSWSH), message-level authorization bypass, injection inside frames, and resource-consumption weaknesses specific to the WS path.
## Preconditions
- An identified WebSocket endpoint (ws:// or wss://)
- Client tooling: Python `websockets`/`websockify`, wscat, or a raw socket script
- The victim/attacker session contexts needed for differential tests
## Attack Surface Signals
- Upgrade requests (`Connection: Upgrade`, `Sec-WebSocket-Key`)
- wss:// URLs in JavaScript bundles (often with tokens in query strings)
- Socket.io / SockJS / GraphQL-over-WS endpoints