Provide references for CVE-2021-39344.
Where can I find more information about CVE-2021-39344?
References are available at: https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39344, https://github.com/BigTiger2020/word-press/blob/main/KJM%20Admin%20Notices.md, https://plugins.trac.wordpress.org/browser/kjm-admin-notices/trunk/admin/class-kjm-admin-notices-admin.php.