diff --git a/templates/cimar_series.html b/templates/cimar_series.html
index 187eab00..fdb29746 100644
--- a/templates/cimar_series.html
+++ b/templates/cimar_series.html
@@ -9,6 +9,7 @@
             <span class='series-block-examination'>{{series|get_item:"series_description"}}</span><br/>
             <span class='series-block-thumbnail'>
               <img 
+      crossorigin="anonymous"
       hx-request='{"noHeaders": true}'
       hx-get='{{series|get_item:"thumbnail"}}?sid={{cimar_sid}}'
       hx-on::after-request= 'event.detail.elt.src = event.detail.xhr.responseURL;'