Security tool · smuggling
smuggler
Detects HTTP request smuggling (CL.TE / TE.CL desync) against a target with minimal, safe probes. First stop before manual desync exploitation.
Overview
Where smuggler fits
Detects HTTP request smuggling (CL.TE / TE.CL desync) against a target with minimal, safe probes. First stop before manual desync exploitation.
Detection-first use
Start with the least intrusive template that can distinguish your hypothesis from a normal response. Preserve raw output and a negative control.
Install
Installation references
Install with gitAuthorization required
git clone https://github.com/defparam/smuggler && cd smuggler- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Test safely
Command templates
Test a hostAuthorization required
Populate placeholders only with assets that are explicitly in scope.
python3 smuggler.py -u {url}- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Related
Continue the workflow
Sources
Attribution and verification
Version history: normalized permanent page created 2026-08-20. Upstream activity and popularity are separate signals and do not establish tool safety.