Security tool · utils
qsreplace
Replaces query-string values in a list of URLs with a supplied value. Essential glue for building fuzz targets.
Overview
Where qsreplace fits
Replaces query-string values in a list of URLs with a supplied value. Essential glue for building fuzz targets.
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 goAuthorization required
go install github.com/tomnomnom/qsreplace@latest- 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
Inject markerAuthorization required
Populate placeholders only with assets that are explicitly in scope.
cat {input} | qsreplace '{value}'- 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.