@Eddy:
Thanks, but your answer seems to be mostly for Pondus and Asyn.
From my own (user) perspective: I'm not sure what to do about "another site" that uses WP and JQuery and gets itself into trouble. Did my AVAST really detect a virus, or just an outdated script configuration that creates a vulnerability? Am I supposed to notify the host they're infected? scold them for not keeping their scripts up-to-date? turn off AVAST and proceed at my own risk?
Maybe you're saying that the host site is either (i) infected or (ii) configured in a way that it's unsafe to load due to vulnerabilities ... in which case, many thanks. But if not, blocking sites from loading because their scripts are outdated would seem to be as much an AVAST problem as it is a site problem.
Or am I missing something? Sorry in advance.