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PHP-Proxy ver<=5.1.0 have Cross-Site Scripting (XSS) Vulnerability Description

Testing Target


PHP-Proxy before 5.1.0 has Cross-Site Scripting (XSS) via the URL field in index.php.


  1. First, we download the latest version from the official website and build it.
  2. In /php-proxy/index.php, only have a input field for type URL and redirect it. Then, input attack string in filed and submit. payload:<input type="text" autofocus onfocus=alert("XSS")>
  3. Show reflect XSS window.


Following are actual case.

  • ver 5.1.0
  • ver 5.0.1
  • ver 3.0.3