Index: wp-admin/edit-form-comment.php
===================================================================
--- wp-admin/edit-form-comment.php	(revision 54300)
+++ wp-admin/edit-form-comment.php	(working copy)
@@ -138,7 +138,7 @@
 <span id="timestamp">
 <?php
 /* translators: %s: Comment date. */
-printf( __( 'Submitted on: %s' ), '<b>' . $submitted . '</b>' );
+printf( __( 'Submitted on: %s' ), '<b>' . esc_html( $submitted ) . '</b>' );
 ?>
 </span>
 <a href="#edit_timestamp" class="edit-timestamp hide-if-no-js"><span aria-hidden="true"><?php _e( 'Edit' ); ?></span> <span class="screen-reader-text"><?php _e( 'Edit date and time' ); ?></span></a>
@@ -187,7 +187,7 @@
 		printf(
 			/* translators: %s: Comment link. */
 			__( 'In reply to: %s' ),
-			'<b><a href="' . $parent_link . '">' . $name . '</a></b>'
+			'<b><a href="' . esc_url( $parent_link ) . '">' . esc_html( $name ) . '</a></b>'
 		);
 		?>
 	</div>