Ticket #56339: 56339.2.patch

src/js/_enqueues/wp/updates.js

@@ -2535 +2535 @@
 
                         data = {
                                 _ajax_nonce: wp.updates.ajaxNonce,
-                                s:           event.target.value,
+                                s:           encodeURIComponent(event.target.value),
                                 tab:         'search',
                                 type:        $( '#typeselector' ).val(),
                                 pagenow:     pagenow