Opening
A third-party module connected to the Gnosis Safe ecosystem was exploited across Ethereum and Base networks, draining approximately $3.2 million from 86 different Safes in two hours. The vulnerable contract, verified on Basescan as "SquidRouterModule," initially sparked confusion due to its name association with Squid protocol. However, Squid clarified that the contract was not built, deployed, or operated by the project, and that the module independently integrated with Squid and other protocols without direct project involvement. Security firms Blockaid and PeckShield were among the first to report details of the incident, which exploited a flaw in the module's signature verification mechanism.
Exploit Mechanics
The vulnerable module accepted a caller-supplied constant string as proof that a transaction message was secure. By passing this value, attackers were able to bypass signature verification mechanisms and execute arbitrary call data from victim wallets. This flaw gave attackers the ability to spend tokens held in affected Safes without requiring legitimate wallet approvals.
Security researchers determined that the exploit relied on Foundry-based exploit contracts that targeted the module's DelegateBundler execution path. According to Blockaid, the attackers impersonated authorized delegates tied to each Safe and initiated arbitrary token swaps through Uniswap V3 liquidity pools.
Asset Conversion and Current Status
The stolen assets were converted into an attacker-created worthless token known as "u" through specially seeded liquidity pools controlled by the exploiter. After routing the assets through these pools, the attacker removed liquidity and consolidated the proceeds into approximately 3.07 million DAI. PeckShield stated that the funds are currently being held in a wallet beginning with "0xa447...54859."
Squid 澄清
Squid 批评了早期公开报道中将漏洞利用错误地直接关联到其协议。化名 Squid 的联合创始人 Fig 表示，被篡改的模块与 Squid 的核心基础设施无关。根据团队的说法，该协议的主要路由器架构保持完全独立，未受到漏洞利用的影响。Squid 解释称，存在漏洞的合约仅是共享了 Squid 名称，并且独立集成了多个协议，包括 Squid，而项目本身并未直接参与。
