Ethereum delays Glamsterdam Hoodi testnet launch over security risks

Ethereum delays Glamsterdam Hoodi testnet launch over security risks

Summary

Ethereum developers postponed the Glamsterdam hard fork’s Hoodi testnet deployment, originally set for Oct. 26, after ChainSecurity warned that proposals EIP-8037 and EIP-8038 could weaken safeguards against insufficient-gas attacks. Changed gas-return rules may let some contracts continue after failed operations, potentially causing them to record failures permanently and block users from retrying. ChainSecurity identified 13 real-world examples and is coordinating disclosures, but has not named affected projects. Developers are reviewing the risks, leaving Glamsterdam’s possible early-December mainnet timeline uncertain. The upgrade had already activated on Sepolia.