Ticket #37989: 37989.diff

src/wp-admin/includes/media.php

@@ -285 +285 @@
                 return new WP_Error( 'upload_error', $file['error'] );
 
         $basename = pathinfo( $name, PATHINFO_BASENAME );
+        $ext = pathinfo( $name, PATHINFO_EXTENSION );
+
+        $name = trim( substr( $basename, 0, - ( 1 + strlen( $ext ) ) ) );
 
         $url = $file['url'];
         $type = $file['type'];
         $file = $file['file'];
-        $title = sanitize_title( $basename );
+        $title = sanitize_text_field( $name );
         $content = '';
         $excerpt = '';