Dalfox
Dalfox is an open-source XSS scanner and parameter analyser written in Go.
Legal & ethical use. Use this tool only on systems, networks and data that you own or have explicit written permission to test. Unauthorised access or scanning can break computer-misuse laws (for example Pakistan's Prevention of Electronic Crimes Act, 2016, and equivalents elsewhere). Practise in your own lab or in authorised environments such as CTFs.
What it is used for
- Check your own app for reflected XSS
- Practise on intentionally vulnerable labs
Key features
- Parameter analysis
- Custom payloads
- Pipeline friendly
Installation
go install github.com/hahwul/dalfox/v2@latest
Beginner usage guide
Run it against a local practice app such as Juice Shop only.
Example commands
Run these only against your own lab or authorised targets. Placeholder addresses such as 192.0.2.x are documentation ranges.
Scan one URL
dalfox url "http://localhost:3000/?q=test"Tests the q parameter of a URL you run locally.
References
Source verification
Last reviewed: 2026-10-27
Links checked over HTTP: 2026-10-27 07:51 UTC — official: 200, docs: 200, repo: 200
Commands were written from the official documentation and have not been executed on this site; test them in your lab.