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HTML Injection Warning

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Message

Ensure the expression is protected by using EncodeHTML(), EncodeJavascript(), or SanitizeHtml() from the Sanitization extension, to avoid security flaws.

Cause

The expression mentioned in the warning has a value that comes from the end user input and that is susceptible to contain malicious content.

Recommendation

Do one of the following:

Enable the Escape Content property of the expression.
Use the EncodeHtml() built-in function to replace all HTML reserved characters by their escaped counterpart.
Use the EncodeJavascript() built-in function to replace all JavaScript reserved characters by their escaped counterpart so they can be included in a JavaScript string.
Use the SanitizeHtml() function from the Sanitization extension module to ensure that the value entered by the end user does not contain any malicious content.
Use the EncodeUrl() built-in function to replace all URL invalid characters by their percent-encoded counterpart.

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