Fuente: https://kellenmace.com/add-unfiltered_html-capability-to-admins-or-editors-in-wordpress-multisite/
<?php /** * Enable unfiltered_html capability for Editors. * * @param array $caps The user's capabilities. * @param string $cap Capability name. * @param int $user_id The user ID. * @return array $caps The user's capabilities, with 'unfiltered_html' potentially added. */ function km_add_unfiltered_html_capability_to_editors( $caps, $cap, $user_id ) { if ( 'unfiltered_html' === $cap && user_can( $user_id, 'editor' ) ) { $caps = array( 'unfiltered_html' ); } return $caps; } add_filter( 'map_meta_cap', 'km_add_unfiltered_html_capability_to_editors', 1, 3 );