Blazor Traffic Processor
Summary: Will Rabb of Aon's Cyber Labs released version 1.0 of Blazor Traffic Processor, a Burp Suite extension that converts BlazorPack serialized messages into human-readable JSON and back. The extension lets testers inspect, modify, and tamper with Blazor Server communications that would otherwise appear as opaque binary data, and it was last updated on 10 September 2025.
Bottom line: Blazor Server traffic that reads as opaque binary is exactly where tampering goes unnoticed, and this extension turns it into editable JSON inside Burp - a third-party tool PortSwigger states it makes no warranty about for quality or usefulness.
Read the original at PortSwigger Research ↗
- Topics
- Vulnerabilities & Patching
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