Let's clear this up quickly: Yes, there's a security hole in the Facebook app. The Next Web also confirmed the same issue in the Dropbox app. The good news is this: It's very unlikely anyone would get your info this way.
Someone would have to have physical access to your iPhone, and you'd have to allow them to plug it into their Mac, then allow them to do a bunch of business on your phone to grab a plain text file from inside these apps, then they'd have to go and do something malicious on your Facebook or Dropbox accounts.
Although many have reported jailbreak is re
