Can not place html script tag in my post (even in [CODE] tags)

I do not know if this is meant to be. If I use the html script tag in my post or thread, following error appears when posting or preview:

Oops! We ran into some problems.
Oops! We ran into some problems. Please try again later. More error details may be in the browser console.

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Edit: Just found out it also can not be in headline of thread.

Can you raise a support ticket on support.BlackHatWorld.com as this appears to be unique to you. Also if you provide the HTML you’re trying to add in the code snippet and which sub forum you’re trying to place it into. As much information as possible would be appreciated and we will look to resolve this for you. Please include a link to this thread in the ticket for reference.

Asked - Answered - Closed.