Microsoft Anti-Cross Site Scripting Library V4.2

AntiXSS 4.2.1 helps you to protect your applications from cross-site scripting attacks.
  • Note:There are multiple files available for this download.Once you click on the "Download" button, you will be prompted to select the files you need.


    File Name:

    AntiXss 4.2.1.msi

    AntiXSS v4.2.docx

    Date Published:


    File Size:

    928 KB

    46 KB

    KB Articles: KB2607664

    Security bulletins:MS12-007

      The Microsoft Anti-Cross Site Scripting Library V4.2 (AntiXSS V4.2) is an encoding library designed to help developers protect their ASP.NET web-based applications from XSS attacks. It differs from most encoding libraries in that it uses the white-listing technique -- sometimes referred to as the principle of inclusions -- to provide protection against XSS attacks. This approach works by first defining a valid or allowable set of characters, and encodes anything outside this set (invalid characters or potential attacks). The white-listing approach provides several advantages over other encoding schemes.

      This release addresses a vulnerability in the HTML Sanitizer, MS12-007 and adds full support for .NET 4.0 as well as restoring support for .NET 2.0.
  • Supported Operating System

    Windows 7, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP

      Microsoft Windows running .NET Framework 2.0 or later
      1. To start the download, click the Download button and then do one of the following, or select another language from Change Language and then click Change.
        • Click Run to start the installation immediately.
        • Click Save to copy the download to your computer for installation at a later time.
      2. The installer will create a directory structure containing the library and documentation.
      3. Reference the library in your application and use it.
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