The algorithmic stablecoin protocol Haven Protocol has issued a warning about a hack exploiting a vulnerability in "range proof validation." This flaw allows attackers to mint illicit XHV undetected. According to reports from exchanges, the amount of XHV exceeds 500 million tokens, while audit data indicates a current supply of only 263 million tokens. The surplus is likely generated through this exploit. The team found a weakness in the "range proof validation", which was introduced after the Haven 3.2 rebase to Monero and has advised exchanges to halt trading on all pairs.