Ethereum Glamsterdam Upgrade Delayed Over Smart Contract Security Risks

Ethereum developers postponed the Glamsterdam upgrade on the Hoodi testnet and canceled its activation scheduled for October 26, leaving the next major development milestone without a confirmed date. The Ethereum Foundation announced the delay after researchers flagged possible security risks in existing smart contracts. The immediate concern is EIP-8037, which would change how Ethereum accounts for gas costs tied to blockchain state; ChainSecurity identified scenarios in which contracts could receive different gas amounts than expected, affecting failed operations. Developers had discussed potential December mainnet activation but had not finalized it. A planned Hoodi gas-limit increase to 200 million was also canceled, and no replacement test date has been announced.