XWiki Platform is a generic wiki platform. Starting in versions 2.2-milestone-1 and prior to versions 14.4.8, 14.10.4, and 15.0-rc-1, it's possible to execute javascript with the right of any user by leading him to a special URL on the wiki targeting a page which contains an attachment. This has been patched in XWiki 15.0-rc-1, 14.10.4, and 14.4.8. The easiest possible workaround is to edit file `<xwiki app>/templates/importinline.vm` and apply the modification described in commit 28905f7f518cc6f21ea61fe37e9e1ed97ef36f01.

The XWiki Platform Index UI is an Index of all pages, attachments, orphans and deleted pages and attachments for XWiki Platform, a generic wiki platform. Prior to versions 13.10.6 and 14.3, it's possible to store JavaScript which will be executed by anyone viewing the deleted attachments index with an attachment containing javascript in its name. This issue has been patched in XWiki 13.10.6 and 14.3. As a workaround, modify fix the vulnerability by editing the wiki page `XWiki.DeletedAttachments` with the object editor, open the `JavaScriptExtension` object and apply on the content the changes that can be found on the fix commit.