Hi @evolutionaryit,
The best way would be to immediately apply the patch to server/php/index.php
:
https://github.com/blueimp/jQuery-File-Upload/commit/aeb47e51c67df8a504b7726595576c1c66b5dc2f#diff-996c857e3951bd17f2fb03545fcae449
However, Wordfence does have an option to disable code execution for uploaded files.
Navigate to Wordfence -> All Options -> General Wordfence Options -> Disable Code Execution for Uploads directory, and make sure that it is checked.
https://www.wordfence.com/help/dashboard/options/#exec-uploads
Note that this will still allow users to upload non-image files, but the uploaded files cannot be executed as code on the server.
I would highly recommend applying the patch the author published on Github.
Dave