Allowance isn't deleted when burning gobblers in mintLegendaryGobbler()

Lines of code Vulnerability details Impact Legendary gobblers can be minted for free. Proof of Concept A simple attack allows anyone with enough gobblers to pay for a legendary to get it for free Step by step attack : -Attacker has 69 gobblers and gives approval of all of them to himself -Attacke...

Mint legendary gobbler for free

Lines of code Vulnerability details Impact Minting a legendary gobbler does not delete getApproved, thus an owner can approve himself before minting the legendary and later transfer back these ordinary gobblers. mintLegendaryGobbler performs an imitation of burning by setting an owner to address0...