Description
XWiki Platform is a generic wiki platform. Starting in version 2.3-milestone-1, the annotation displayer does not execute the content in a restricted context. This allows executing anything with the right of the author of any document by annotating the document. This has been patched in XWiki 13.10.11, 14.4.7 and 14.10. There is no easy workaround except to upgrade.
Remediation
References
https://github.com/xwiki/xwiki-platform/commit/d87d7bfd8db18c20d3264f98c6deefeae93b99f7
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-h6f5-8jj5-cxhr
https://jira.xwiki.org/browse/XWIKI-20360
https://jira.xwiki.org/browse/XWIKI-20384
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