An issue was discovered in the image-manager in Xoops 2.5.10. When any image with a JavaScript payload as its name is hovered over in the list or in the Edit page, the payload executes.
https://xoops.org/modules/publisher/
https://github.com/XOOPS/XoopsCore25/commits/master
https://blog.nirajkhatiwada.com.np/cve-2019-16684-stored-cross-site-scripting/