Ticket #58831: 58831-escaping-function-missing-twentyten-theme.patch

wp-content/themes/twentyten/category.php

@@ -21 +21 @@
                                 <?php
                                         $category_description = category_description();
                                 if ( ! empty( $category_description ) ) {
-                                        echo '<div class="archive-meta">' . $category_description . '</div>';
+                                        echo '<div class="archive-meta">' . esc_html( $category_description ) . '</div>';
                                 }
 
                                 /*