Description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Users are able to forge an URL with a payload allowing to inject Javascript in the page (XSS). It's possible to exploit the restore template to perform a XSS, e.g. by using URL such as: > /xwiki/bin/view/XWiki/Main?xpage=restore&showBatch=true&xredirect=javascript:alert(document.domain). This vulnerability exists since XWiki 9.4-rc-1. The vulnerability has been patched in XWiki 14.10.5 and 15.1-rc-1.
Remediation
References
https://github.com/xwiki/xwiki-platform/commit/d5472100606c8355ed44ada273e91df91f682738
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-mwxj-g7fw-7hc8
https://jira.xwiki.org/browse/XWIKI-20352
https://jira.xwiki.org/browse/XWIKI-20583