Ladies & Gentlemen Beware! 💸 A WETH Scandal Shakes the Base!

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It has come to the attention of the esteemed CertiK, a most reputable auditor of smart contracts, that a most unscrupulous exploit has transpired upon the Base blockchain. An unverified smart contract, residing at the rather unassuming address 0xE143b486ab0413, hath siphoned 55 Wrapped Ethers (WETH), valued at approximately £220,000 (or $220,000, if one prefers the vulgar tongue), from a most unfortunate victim. How very modern of them.

The root of this calamity lies in the ill-regulated uniswapV3SwapCallback() function, which, lacking proper oversight, allowed nefarious transferFrom calls to deplete the victim’s wallet. A most grievous oversight, one might say, for even a gentleman of modest means would not so carelessly leave his pocketbook unattended.

#CertiKInsight 🚨

We have observed a most distressing exploit upon an unverified contract on Base, wherein 55 WETH (~$220K) were purloined from a victim who, in their naivety, had previously approved the contract.

Revoke all approvals to 0xE143b486ab0413Df0D6DAd2caf6d2f61CAC54730 posthaste.
The…

– CertiK Alert (@CertiKAlert) October 30, 2025

Of Exploits and Misfortunes

The Base network, a burgeoning Ethereum Layer-2 chain, hath of late attracted considerable attention. Through the vigilant eye of CertiK’s Skylens tool, the ill-gotten 55.4 WETH of the hapless victim (0xf1a3686f4D) were traced to the attacker’s address. The victim, alas, had already signed the contract-a most grievous error in the realm of DeFi, akin to entrusting one’s life savings to a stranger at a country ball.

This affair bears a striking resemblance to a prior theft of £1,000,000 (or $1,000,000) in October 2024, where similar vulnerabilities in unverified lending contracts on Base were exploited. Both instances serve as a most solemn reminder: untested code is as dangerous as an unchaperoned daughter in London’s drawing rooms. 🕵️‍♂️

Security Lessons for the Discerning

CertiK, ever the vigilant guardian, adviseth all users to revoke approvals to the compromised address. The ill-conceived callback mechanism, which neglected to verify the sender’s identity, is but another feather in the cap of Uniswap V3’s many woes.

In this age of DeFi, where fortunes are made and lost with the flick of a keystroke, one must tread with the caution of a lady navigating a treacherous dance floor. Verify thy contracts, dear reader, and let not thy assets fall prey to the whims of the unscrupulous. 🚨

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2025-10-30 13:20