id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
20226	Don't advertise pingback URL on resources that don't support pingbacks	solarissmoke		"Currently, !WordPress indiscriminately adds an `X-Pingback` header to all responses. Similarly all the bundled themes add `link rel=""pingback""` to all pages.

The purpose of `X-Pingback` and `link rel=""pingback""` is to advertise that the current resource supports pingbacks and provide a pingback URL. They should only be inserted when the resource actually accepts pingbacks - i.e., only when `is_single()` is true, and maybe even only when pings are open on that post."	enhancement	new	normal	Awaiting Review	Template	3.3	minor		nacin-likes