Affects ‘wp-includes/js/plupload/plupload.flash.swf’
gist.github.com/cure53/09a81530a44f6b8173f545accc9ed07e
github.com/WordPress/WordPress/commit/c33e975f46a18f5ad611cf7e7c24398948cecef8
wordpress.org/news/2016/05/wordpress-4-5-2/