How to Safely Sanitize Cross Scripting Vulnerabilities

[SudhaPrasannaTr]

fileInput.hidden = true;
fileInput.type = "file";
fileInput.value = null;
document.body.append (fileInput);
fileInput.addEventListener("change", function (evt)

The append is giving Snyc issue which causes cross site scripting vulnerabilities if fileInput contains any unsafe data
To fix we can sanitize the code by adding DOM purifier with plugin by using our own client-side validation.

Or is there any update or built in sanitizations releases are available in future releases.
Path:
C:\development\dev\reuters_imagen_imagenweb\application\source\js\js-plugins\pdfjs\web\viewer.mjs