Fixing WordPress Attachment Capabilities

wp-fix-attachment-capabilities.php

<?php

add_filter(
	'register_post_type_args',
	function ($args, $postType) {
		if ('attachment' === $postType) {
			$args['capabilities']['edit_posts']   = 'upload_files';
			$args['capabilities']['upload_files'] = 'upload_files';
		}
		
		return $args;
	},
	15,
	2
);