The unfiltered_html permission is a security feature in WordPress that prevents users from using potentially dangerous tags such as iframes and embed, and also more advanced code such as JavaScript. This unfiltered_html permission could be very dangerous in the wrong hands.The unfiltered_html permission is a security feature in WordPress that prevents users from using potentially dangerous tags such as iframes and embed, and also more advanced code such as JavaScript. This unfiltered_html permission could be very dangerous in the wrong hands.The unfiltered_html permission is a security feature in WordPress that prevents users from using potentially dangerous tags such as iframes and embed, and also more advanced code such as JavaScript. This unfiltered_html permission could be very dangerous in the wrong hands.The unfiltered_html permission is a security feature in WordPress that prevents users from using potentially dangerous tags such as iframes and embed, and also more advanced code such as JavaScript. This unfiltered_html permission could be very dangerous in the wrong hands.The unfiltered_html permission is a security feature in WordPress that prevents users from using potentially dangerous tags such as iframes and embed, and also more advanced code such as JavaScript. This unfiltered_html permission could be very dangerous in the wrong hands.