Wasabi Protocol Loses $4.5 Million Due to Apparent Admin Key Compromise

The decentralized finance sector continues to experience significant losses, with Wasabi Protocol being the latest victim. On Thursday, the protocol, which operates as a perpetuals trading platform on Ethereum and Base, was drained of approximately $4.55 million after its deployer key was compromised, according to security firm Blockaid. This incident follows a string of DeFi losses exceeding $605 million across at least 12 incidents in the past month. The attack bears a striking resemblance to the Drift Protocol exploit, where North Korea-linked attackers utilized a compromised admin key to drain $285 million from the Solana-based perpetuals exchange. The exploit was carried out through an externally owned account called wasabideployer.eth, which held the sole admin role in Wasabi's permission system. Once the attacker gained access to the deployer key, they granted themselves admin privileges without delay by calling grantRole on the permission contract. A helper contract then upgraded Wasabi's perp vaults and Long Pool to malicious implementations, resulting in the draining of balances, as reported by Blockaid. The exploit leveraged the Universal Upgradeable Proxy Standard (UUPS), which enables a smart contract to alter its underlying code while retaining the same address. Although UUPS is widely used for its convenience in fixing bugs without migrating users, it poses a significant risk if an attacker gains control of admin permissions, as they can replace the contract's logic with malicious code designed to steal funds. Wasabi's lack of timelock or multisig protection for the admin role was a critical vulnerability, as a timelock would have enforced a delay between the announcement and execution of an admin action, while a multisig would have required multiple signers to approve changes. The absence of these safeguards left a single key in control of the protocol. Blockaid's exploit detection system identified the ongoing admin-key compromise exploit on Wasabi Protocol across Ethereum and Base. The compromised contracts include Wasabi's wWETH, sUSDC, wBITCOIN, wPEPE, and Long Pool vaults on Ethereum, as well as its sUSDC, wWETH, sBTC, sVIRTUAL, sAERO, and sBRETT vaults on Base. Users holding Wasabi LP tokens were advised to revoke any active approvals to the vault contracts, as the underlying assets backing those tokens were either drained or remained at risk. This incident is part of a larger trend of DeFi exploits, with the cumulative loss total for 2026 exceeding $770 million across more than 30 reported incidents. The majority of these losses occurred in April, with smaller breaches affecting CoW Swap, Grinex, Resolv Labs, and Volo Protocol, among others. A common thread among these incidents is the exploitation of known vulnerabilities, with each producing similar post-mortem analyses about lessons learned, yet the next exploit often occurs before these lessons are implemented. Wasabi Protocol has not yet issued a public statement regarding the incident.