Dear Community By comparing the advisory of NextCloud and OwnCloud I figured out that OwnCloud has multiple not patched vulnerabilities. You can see list here it seems all patches missing from latest Nextcloud 10.0.1 release in OwnCloud: https://nextcloud.com/security/advisories. This seems to include XSS vulns and more. An example exploit for one of the vulns would look like that: http://demo.owncloud.org/index.php/apps/gallery/#<script>alert(document.domain)</script>/%00 And also RhinosSecurity seem to have blogged about unfixed vulns in OwnCloud: https://rhinosecuritylabs.com/2016/10/operation-ownedcloud-exploitation-post-exploitation-persistence/i>>? Hope that OwnCloud fixes this soon! Cheers Matei Felix