Ticket #12823: no-blog-sanitization-before-strict-check.diff

wp-includes/ms-functions.php

@@ -541 +541 @@
 function wpmu_validate_blog_signup($blogname, $blog_title, $user = '') {
         global $wpdb, $domain, $base, $current_site;
 
-        $blogname = preg_replace( "/\s+/", '', sanitize_user( $blogname, true ) );
         $blog_title = strip_tags( $blog_title );
         $blog_title = substr( $blog_title, 0, 50 );