DotNetNuke before 4.8.2, during installation or upgrade, does not warn the administrator when the default (1) ValidationKey and (2) DecryptionKey values cannot be modified in the web.config file, which allows remote attackers to bypass intended access restrictions by using the default keys.
https://github.com/advisories/GHSA-grw3-hjjm-5cjm
https://exchange.xforce.ibmcloud.com/vulnerabilities/41399
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-4007
http://www.securityfocus.com/bid/28391
http://www.securityfocus.com/archive/1/489957/100/0/threaded
http://www.dotnetnuke.com/News/SecurityBulletins/SecurityBulletinno12/tabid/1148/Default.aspx