TREE NEWS update: A crypto vault on Base was drained of about 1,783 wstETH on October 4, with losses exceeding $6 million. On-chain records show the vault was controlled by a 3-of-7 Safe whose seven signers have not been publicly identified. Security firms said the attacker borrowed aBaswstETH from the vault and swapped it for wstETH via Aave; neither the Base chain nor Aave’s core contracts were implicated, and the specific authorization flaw remains unconfirmed.
Base Vault Loses Over $6M in wstETH to Unknown Attacker
The detail that stands out is the 3-of-7 Safe with unidentified signers: the failure point sits in key management and authorization, not in Base or Aave, which limits the blast radius to this vault's own configuration. That distinction matters for anyone relying on multisig Safes as a security guarantee, since an unconfirmed authorization flaw implies the mechanism itself may be the weak link rather than the chain. Whether the specific flaw is ever identified, and whether similar Safe setups face comparable exposure, is the open question worth tracking.
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