Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
XWiki Platform is a generic wiki platform. Starting in version 12.10, a user without script rights can introduce a stored cross-site scripting by using the Live Data macro. This has been patched in XWiki 14.9, 14.4.7, and 13.10.10. There are no known workarounds.
All versions starting from 12.10 before 13.10.10, all versions starting from 14.0 before 14.4.7, all versions starting from 14.5 before 14.9
Upgrade to versions 13.10.10, 14.4.7, 14.9 or above.