The problems addressed are unannounced XSS issues privately discovered and reported to the WordPress team.
I don’t have a clue what XSS means, but an upgrade was in order. It sounds like a serious breach of security to me, hence the immediate patch to cover the hole. If you like to read more about XSS or cross site scripting, Wikipedia comes through with this explanation.
I must say by far this is the easiest upgrade so far. All four instances of WordPress were upgraded in less than 20 minutes. I still wish there is an automated way of updating each instance of WordPress similar to how Firefox upgrades its own browsers. A WordPress upgrade is probably a little bit more complicated than a Firefox upgrade, but it’s not impossible.
Right now, the upgrade process involves deleting the older files and uploading the latest ones to the web server. It’s a simple process, but the exercise can get old rather quickly after two to three instances. There has to be a better way.
Maybe, I can do some PHP magic to accomplish this. Stay tuned. I will look into this if it’s entirely possible. Maybe, even create a WordPress plugin for upgrades. Whew. You gotta start somewhere.