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README.md

Damn Small XSS Scanner Python 3.x License

Damn Small XSS Scanner (DSXS) is a fully functional Cross-site scripting vulnerability scanner (supporting GET and POST parameters) written in under 100 lines of code.

Vulnerable

As of optional settings it supports HTTP proxy together with HTTP header values User-Agent, Referer and Cookie.

Sample runs

$ python3 dsxs.py -h
Damn Small XSS Scanner (DSXS) < 100 LoC (Lines of Code) #v0.3a
 by: Miroslav Stampar (@stamparm)

Usage: dsxs.py [options]

Options:
  --version          show program's version number and exit
  -h, --help         show this help message and exit
  -u URL, --url=URL  Target URL (e.g. "http://www.target.com/page.htm?id=1")
  --data=DATA        POST data (e.g. "query=test")
  --cookie=COOKIE    HTTP Cookie header value
  --user-agent=UA    HTTP User-Agent header value
  --referer=REFERER  HTTP Referer header value
  --proxy=PROXY      HTTP proxy address (e.g. "http://127.0.0.1:8080")
$ python3 dsxs.py -u "http://testphp.vulnweb.com/search.php?test=query" --data="s
earchFor=foobar"
Damn Small XSS Scanner (DSXS) < 100 LoC (Lines of Code) #v0.3a
 by: Miroslav Stampar (@stamparm)

* scanning GET parameter 'test'
* scanning POST parameter 'searchFor'
 (i) POST parameter 'searchFor' appears to be XSS vulnerable (">.xss.<", outside
 of tags, no filtering)

scan results: possible vulnerabilities found
$ python3 dsxs.py -u "http://public-firing-range.appspot.com/address/location.has
h/replace"
Damn Small XSS Scanner (DSXS) < 100 LoC (Lines of Code) #v0.3a
 by: Miroslav Stampar (@stamparm)

 (i) page itself appears to be XSS vulnerable (DOM)
  (o) ...<script>
      var payload = window.location.hash.substr(1);location.replace(payload); 

    </script>...
 (x) no usable GET/POST parameters found

scan results: possible vulnerabilities found

Requirements

Python version 3.x is required for running this program.

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