wp-includes/rest-api/endpoints/class-wp-rest-themes-controller.php:149Checks if a theme can be read.
true|WP_Error protected function check_read_active_theme_permission() { if ( current_user_can( 'edit_posts' ) ) { return true; } foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) { if ( current_user_can( $post_type->cap->edit_posts ) ) { return true; } } return new WP_Error( 'rest_cannot_view_active_theme', __( 'Sorry, you are not allowed to view the active theme.' ), array( 'status' => rest_authorization_required_code() ) ); }Introduced in 5.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api/endpoints/class-wp-rest-themes-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.