Ticket #30767: 30767.diff

src/wp-admin/update-core.php

@@ -241 +241 @@
 <?php
         foreach ( (array) $plugins as $plugin_file => $plugin_data) {
                 $info = plugins_api('plugin_information', array('slug' => $plugin_data->update->slug ));
-                if ( is_wp_error( $info ) ) {
+                if ( strpos( $plugin_data->update->package, 'https://downloads.wordpress.org' ) !== false && is_wp_error( $info ) ) {
                         continue;
                 }