[elliotanderson]

At this stage with the vulnerability publicly and widely reported - demonstrating an attack vector that involves seemingly harmless code is perfectly acceptable. Not everyone understands the magic involved and it would be able to spot exploitable code.

[charliesome]

A harmless payload can be absolutely trivially turned into a malicious payload.

I intend to share some details about this later on, but not so soon after the vulnerability is announced. There has to be a reasonable amount of time allowed for people to patch their servers.