XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In versions from 14.4.2 to before 16.4.8, 16.5.0-rc-1 to before 16.10.7, and 17.0.0-rc-1 to before 17.4.0-rc-1, the PDF export jobs store sensitive cookies unencrypted in job statuses. XWiki shouldn't store passwords in plain text, and it shouldn't be possible to gain access to plain text passwords by gaining access to, e.g., a backup of the data directory. This vulnerability has been patched in XWiki 16.4.8, 16.10.7, and 17.4.0-rc-1.
The product stores, transfers, or shares a resource that contains sensitive information, but it does not properly remove that information before the product makes the resource available to unauthorized actors.