request smuggling
Advanced level
2HTTP request smuggling — H2→H1 desync, TE.CL, CL.TE and H2.CL in 2026
An updated catalog of HTTP smuggling: classic CL.TE, TE.CL, H2→H1 downgrade desyncs, HTTP/2 SETTINGS frame abuse, chunked extensions and HTTP/2 pseudo-headers.
HTTP Request Smuggling — CL.TE, TE.CL, TE.TE and caching exploitation
When the frontend and the backend interpret the same request differently. Smuggling for auth bypass, cache poisoning, victim-aware attacks.
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