Description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. The application allows anyone with view access to modify any page of the wiki by importing a crafted XAR package. The problem has been patched in XWiki 14.6RC1, 14.6 and 13.10.8. As a workaround, setting the right of the page Filter.WebHome and making sure only the main wiki administrators can view the application installed on main wiki or edit the page and apply the changed described in commit fb49b4f.
Remediation
References
https://github.com/xwiki/xwiki-platform/commit/fb49b4f289ee28e45cfada8e97e320cd3ed27113
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-q6jp-gcww-8v2j
https://jira.xwiki.org/browse/XWIKI-19758
Related Vulnerabilities
CVE-2019-20503 Vulnerability in npm package electron
CVE-2021-28860 Vulnerability in npm package mixme
CVE-2016-9177 Vulnerability in maven package com.sparkjava:spark-core
CVE-2021-41973 Vulnerability in maven package org.apache.mina:mina-http
CVE-2021-21252 Vulnerability in maven package org.webjars.bower:jquery-validation