XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Simple users can create global SSX/JSX without specific rights: in theory only users with Programming Rights should be allowed to create SSX or JSX that are executed everywhere on a wiki. But a bug allow anyone with edit rights to actually create those. This issue has been patched in XWiki 13.10-rc-1, 12.10.11 and 13.4.6. There's no easy workaround for this issue, administrators should upgrade their wiki.
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. A guest user without the right to view pages of the wiki can still list documents by rendering some velocity documents. The problem has been patched in XWiki versions 12.10.11, 13.4.4, and 13.9-rc-1. There is no known workaround for this problem.