News linked to both this project and an event.
According to CoinDesk, a Gnosis Safe wallet on Ethereum was attacked, with approximately 2,900 rsETH (valued at around $7.8 million) transferred. Security firms BlockSec, Blockaid, and SlowMist pointed out that the root cause of the attack lies in an authorization check flaw within the wallet-approved Multicall contract—the contract is intended to verify caller permissions, but the vulnerability allows anyone to bypass validation simply by targeting the contract itself. The attacker subsequently moved the rsETH into a liquidity pool based on the valueless token "Permissionless Attacker Token." An automated bot named "yoink" paid approximately $47,000 to frontrun the transaction, transferring 2,882 rsETH to a separate address. rsETH issuer Kelp DAO stated that its smart contracts are secure and rsETH is fully collateralized, and has implemented a 24-hour pause measure on the relevant addresses.
According to BlockSec Phalcon, the HandlerV1 contract managed by Hyperbridge on the Ethereum network was found to contain a Merkle Mountain Range (MMR) proof replay vulnerability, resulting in approximately $242,000 in losses. The vulnerability stems from the lack of binding between proofs and requests, enabling attackers to replay historical valid proofs alongside newly forged requests to perform malicious actions—such as altering administrator privileges. In the specific incident, the attacker changed the Polkadot (DOT) token administrator and then exploited those privileges to mint additional DOT tokens for profit. Observed attack transactions include: changing the DOT token administrator and minting new tokens (losses of ~$237,400), changing the ARGN token administrator and minting new tokens (losses of ~$3,800), and host withdrawal operations. The vulnerability was discovered by PhalconSecurity and analyzed via PhalconExplorer. Previously, the Hyperbridge gateway contract was attacked, leading to the unauthorized minting and subsequent dumping of 1 billion DOT tokens on Ethereum.