Some bugs are a right bugger of a BOFH if you don't deal with them right.
"By sending a specially-malformed HTTP POST request attackers might be able to assault vulnerable systems without needing either user names or passwords, an alert on the bug by IBM's X-force security division warns."
And then there is also the ZerodDay Opportunist, the Yin of that Negative Yang, who would be into sending especially-informed HTTP POSTs, which may or may not be requests for anything.