Yes, I use CMS on a website I own.

Yes, I've read this warning (it's the same warning on Whitelist extension page). But how to do that?

Okay, thank you.

I can't even log to my session or on Shoutwiki.com.
Can't use my wiki, and add pages, since the Mediawiki software update.

Not able to connect my account on shoutwiki.com, I can't be anything else than "anonymous user".
Same message than on my wiki, but in English: "There seems to be a problem with your login session; this action has been canceled as a precaution against session hijacking. Go back to the previous page, reload that page and then try again."

The message box displays: "Votre session de connexion semble avoir des problèmes ; cette action a été annulée en prévention d'un piratage de session. Veuillez cliquer sur « Précédent », rechargez la page d'où vous venez, puis réessayez."

It was only on one of my computers, now it's on both. I can only use my phone, and I guess once I log off, I won't be able to connect again.