7 Min ReadWeb Security

WebSocket Threat Vector Analysis

Uncovering race condition patterns and blind server hijackings in active full-duplex WebSocket channels.

🔍 Stateful Vulnerability Fields

Unlike stateless HTTP requests, WebSockets maintain persistent connections. This makes testing them a challenge for traditional security scanners, which fail to track the state of active sessions.

In this research, I detail the mechanics of Cross-Site WebSocket Hijacking (CSWSH) and how session authorization tokens can be leaked or bypassed. I outline how concurrent fuzzing and out-of-band (OAST) callbacks allow researchers to trigger and confirm vulnerabilities inside stateful message loops.