Ticket #31694: 31694.patch

src/wp-admin/includes/class-wp-plugins-list-table.php

@@ -515 +515 @@
                 if ( ! empty( $totals['upgrade'] ) && ! empty( $plugin_data['update'] ) )
                         $class .= ' update';
 
+                $plugin_slug = 'not-hosted-on-official-wordpress-repository';
+                if ( ! empty( $plugin_data['slug'] ) ) {
+                        $plugin_slug = $plugin_data['slug'];
+                }
+
                 printf( "<tr id='%s' class='%s' data-slug='%s'>",
                         $id,
                         $class,
-                        $plugin_data['slug']
+                        esc_attr( $plugin_slug )
                 );
 
                 list( $columns, $hidden ) = $this->get_column_info();