Provide references for CVE-2021-39356.
Where can I find more information about CVE-2021-39356?
References are available at: https://plugins.trac.wordpress.org/browser/content-staging/trunk/templates/settings.php, https://wordfence.com/vulnerability-advisories/#CVE-2021-39356, https://github.com/BigTiger2020/word-press/blob/main/Content%20Staging.md.