Submitted by paulius.eth, also found by 0xRajeev, cmichel, and shw
This function sponsor should only be called by the factory, however, it does not have any auth checks, so that means anyone can call it with an arbitrary _sponsorAddress address and transfer tokens from them if the allowance is > 0:
Recommend checking that the sender is a factory contract.
Splidge (Reality Cards) confirmed:
mcplums (Reality Cards) commented:
Splidge (Reality Cards) resolved:
