6.6 Security Wanchain Cardano-BNB跨链桥遭攻击，5.15亿枚NIGHT代币（约900万美元）被盗，因签名编码漏洞。NIGHT价格暴跌，桥已关闭。
2026年7月21日，Wanchain的Cardano-BNB Chain跨链桥遭遇重大攻击，约5.15亿枚NIGHT代币被未经授权地从桥的金库中提取，价值约900万美元。这些代币作为Cardano与BNB Chain跨链操作的抵押品。事件发生后，NIGHT价格在24小时内暴跌超30%。 BlockSec的初步调查显示，漏洞源于TreasuryCheck验证器的加密实现。签名消息通过拼接14个变长字段且无明确分隔符或长度前缀，攻击者可利用该缺陷复用合法交易签名，授权恶意提取。 Wanchain已关闭受影响的桥并展开调查，确认攻击仅限于桥基础设施，未影响Midnight或Cardano主网。此次事件引发了对跨链桥安全性的广泛担忧，凸显了加强编码规范以防止类似攻击的必要性。
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Wanchain Cardano Bridge Exploit Drains 515M NIGHT, Token Plunges 30% to Record Low
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Wanchain Bridge Exploit Drains 515M NIGHT as Token Crashes 29%
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Digging deep into Wanchain’s Cardano-BNB Bridge exploit – How $9M NIGHT vanished in hours
Wanchain Cardano Bridge Reportedly Exploited, 515 Million...
BlockSec: Wanchain's Cardano cross-chain bridge attacked, approximately 515 million NIGHT stolen from bridge treasury
