The Laravel CMS Search URL is /cms-Search-CMS.html by default, you can change it by edit the system.reserved_slugs at the CMS Settings page

Here are some other CMS reserved slugs as well, be careful.

{
"search" : "Search-CMS.html",
"sitemap" : "sitemap.txt",
"redirect" : "redirect-link",
"tag" : "List-Tag.html"
}