Provide references for CVE-2021-39343.
Where can I find more information about CVE-2021-39343?
References are available at: https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39343, https://plugins.trac.wordpress.org/browser/mpl-publisher/trunk/libs/PublisherController.php#L35, https://github.com/BigTiger2020/word-press/blob/main/MPL-Publisher.md.