GoPlus Security has reported that Aperture Finance and 0xswapnet suffered significant losses due to attacks exploiting arbitrary call vulnerabilities in their unaudited and closed-source contracts. The total amount stolen is approximately $17 million. Aperture Finance lost around 36.9 WBTC, valued at about $3.2 million, while 0xswapnet suffered a loss of approximately $13.3 million in USDC.