Description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions any user with edit right can copy the content of a page it does not have access to by using it as template of a new page. This issue has been patched in XWiki 13.2CR1 and 12.10.6. Users are advised to update. There are no known workarounds for this issue.
Remediation
References
https://github.com/xwiki/xwiki-platform/commit/30c52b01559b8ef5ed1035dac7c34aaf805764d5
https://github.com/xwiki/xwiki-platform/commit/b35ef0edd4f2ff2c974cbeef6b80fcf9b5a44554
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-gf7x-2j2x-7f73
https://jira.xwiki.org/browse/XWIKI-18430