Description
XWiki Platform Filter UI provides a generic user interface to convert from a XWiki Filter input stream to an output stream with settings for each stream. Starting with versions 6.0-milestone-2 and 5.4.4 and prior to versions 12.10.11, 14.0-rc-1, 13.4.7, and 13.10.3, XWiki Platform Filter UI contains a possible cross-site scripting vector in the `Filter.FilterStreamDescriptorForm` wiki page related to pretty much all the form fields printed in the home page of the application. The issue is patched in versions 12.10.11, 14.0-rc-1, 13.4.7, and 13.10.3. The easiest workaround is to edit the wiki page `Filter.FilterStreamDescriptorForm` (with wiki editor) according to the instructions in the GitHub Security Advisory.
Remediation
References
https://github.com/xwiki/xwiki-platform/commit/21906acb5ee2304552f56f9bbdbf8e7d368f7f3a
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-xjfw-5vv5-vjq2
https://jira.xwiki.org/browse/XWIKI-19293
Related Vulnerabilities
CVE-2020-25638 Vulnerability in maven package org.hibernate:hibernate-core
CVE-2021-23344 Vulnerability in npm package total.js
CVE-2021-31597 Vulnerability in npm package xmlhttprequest-ssl
CVE-2021-20190 Vulnerability in maven package com.fasterxml.jackson.core:jackson-databind
CVE-2020-28498 Vulnerability in maven package org.webjars.npm:elliptic