The "safe-html" setting:

This setting controls whether or not unsafe HTML elements (such as <script> or <style>) are allowed in Markdown-formatted documents. Unsafe HTML is disabled by default. If this setting exists and is a string, then letters in that string can enable unsafe HTML in various contexts:

b

Unsafe HTML allowed in embedded documentation

f

Unsafe HTML allowed in forum posts

t

Unsafe HTML allowed in tickets

w

Unsafe HTML allowed on wiki pages