Taiko’s ERC20 Vault on Ethereum was attacked, with losses exceeding $1 million, according to Blockaid monitoring. According to ChainCatcher, Blockaid said the root cause was a defect in the verification of source-signal proofs in Taiko’s cross-chain bridge.
Blockaid reported that a crafted message proof was accepted as valid on Ethereum L1 without a corresponding legitimate MessageSent event on Taiko’s source chain. This allowed an attacker to register and withdraw fraudulent cross-chain messages, leading to the unauthorized release of assets from the ERC20 Vault.
Blockaid: Taiko ERC20 Vault on Ethereum Hit by Cross-Chain Proof Flaw, Losing Over $1 Million
2026-06-22 00:03:39
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