Ethereum Delays Glamsterdam Testnet Fork Over Gas Security Flaws
Summary
Ethereum developers delayed the Glamsterdam upgrade on the Hoodi testnet after auditor ChainSecurity found security risks in its gas changes. The firm identified 13 real-world examples and is notifying affected projects. Glamsterdam’s new gas rules may let some failed external calls complete instead of reverting, undermining contract safeguards against insufficient-gas attacks. Node operators were advised to use software versions that omit the upgrade or await updated releases. The upgrade is already active on Sepolia, but no new Hoodi activation date has been set; its mainnet launch had been targeted for late 2026.
