Submitted by JMukesh, also found by tensors
The use of .transfer in TokenHandler.sol L174 to send ether is now considered bad practice as gas costs can change which would break the code.
See stop using soliditys transfer now, and istanbul hardfork eips increasing gas costs and more.
Recommend using call instead, and make sure to check for reentrancy.
jeffywu (Notional) commented:
ghoul-sol (judge) commented:
EDITORS NOTE: Additional conversation regarding this vulnerability can be found here
