My iPads on 18.7.3 just yesterday started pushing notifications to upgrade to 26.2 again.
Guess Apple wants to pump up those numbers. If they really cared, if they had an ethical bone in their body, they would release 18.7.3 to the public WHICH THEY ALREADY HAVE STAGED.
This is more like blackmail where they are dangling these security issues over everyone's head as some scare tactic to upgrade, instead of giving everyone access to the iOS 18 security patch which already exists.