🐛 Bug HuntSO Solidity Hard⚡+35 XP

Reentrancy Vulnerability

This withdraw function is vulnerable to reentrancy.

🐛 Find the bug

1function withdraw() external {

2 uint amount = balances[msg.sender];

3 (bool ok,) = msg.sender.call{value: amount}("");

4 balances[msg.sender] = 0;

5}

🐛 The bug is on line 4