Hopefully Nexon catches this quick.

This isn't just mesos. It's an item generator. Mesos are a high concern, yes, but this is the kind of hack/exploit that completely destroys the market within a day or two of release.

Meso is probably the worst thing you can get from this generator, the list of items isn't particularly large and most of the stuff you can get from it is junk. It's mostly just lots of permanent/tradeable mounts and android coupons.

I doubt they'll rollback since there was a miracle time event but I imagine there'll be an unscheduled server check soon, probably banning every account that used the exploit.

This would explain the 'level up hack', they can the exploit to get Storm Growth potions. Happy time boxes, BigWig boxes and assorted other event boxes too.