Thers is a xss issue in schema-browser page of Admin Web UI.

Open Solr Admin Web UI, select a core(such as collection1) and then click "schema-browse",and input a url like "http://127.0.0.1:8983/solr/#/collection1/schema-browser?field=cat=<img src=1 onerror=alert(1);>" to the browser address, you will get alert box with "1".

I changed follow code to void this problem:
Original code:
$( 'option[value="' + params.route_params.path + '"]', related_select_element )
.attr( 'selected', 'selected' );

Changed code:
$( 'option[value="' + params.route_params.path.esc() + '"]', related_select_element )
.attr( 'selected', 'selected' );