What is responsible disclosure?

Responsible disclosure is a process in which security researchers notify affected parties before publicly revealing details. It gives projects time to investigate and address issues. ChainSecurity said it is following that approach with the projects behind the 13 contracts.

Ethereum Delays Glamsterdam Hoodi Testnet Launch After Security Review

Ethereum has postponed the Hoodi testnet launch for its Glamsterdam upgrade after ChainSecurity flagged smart-contract risks tied to proposed gas changes. The security firm says it found 13 real-world examples and is coordinating responsible disclosure with affected projects.

Disclaimer: News content is based on public news sources and provided for information only. It does not constitute investment advice.

Ethereum Delays Glamsterdam Hoodi Testnet Launch After Security Review

Cointelegraph·10/23/2026, 05:09:41· crypto

Delay Tied to Smart Contract Review

Ethereum’s planned Hoodi testnet launch for the Glamsterdam upgrade has been delayed after security concerns were raised about how the upgrade’s gas changes could affect existing smart contracts. ChainSecurity said it identified 13 real-world examples of smart contracts that may be affected. The security firm added that it is coordinating responsible disclosure with the projects behind those contracts. The source did not specify a new launch date for Hoodi.

Why Gas Changes Can Matter for Contracts

Gas is the unit Ethereum uses to meter computational work, and changes to gas rules can alter the cost of executing specific operations. For smart contracts, that matters when code assumes certain operations will remain cheap or when gas limits are tightly set. ChainSecurity’s review found 13 deployed examples that could be exposed, suggesting the issue is not purely theoretical. Responsible disclosure allows affected teams to examine their contracts and coordinate any mitigation before technical details become public.

Hoodi’s Role in Ethereum Testing

Hoodi is one of Ethereum’s public testnets, used by developers to trial upgrades in an environment that mirrors mainnet conditions without carrying real funds. Testnet launches are typically a checkpoint before an upgrade is considered ready for broader deployment. Postponing the Hoodi launch gives auditors and client teams more time to assess the gas-change findings and for affected projects to respond. Developers who planned to test applications on Hoodi may need to adjust their timelines, though the source did not detail specific impacts.

Security Review and Upgrade Coordination

Ethereum upgrades involve multiple clients, auditors, and application teams, so a single security finding can affect the coordination schedule. ChainSecurity’s disclosure process is meant to give affected projects time to address issues before broader public discussion. The 13 examples provide a concrete basis for reviewing how the gas changes interact with deployed code. The delay reflects how security review can affect the timing of public testnet milestones.

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Frequently asked questions

What is the Glamsterdam upgrade?▾

Glamsterdam is the name of an Ethereum network upgrade that includes changes to gas rules, according to the report. The Hoodi testnet launch for it has been delayed after ChainSecurity flagged potential smart-contract risks. The source did not provide a full list of upgrade features.

What is the Hoodi testnet?▾

Hoodi is an Ethereum testnet used to trial upgrades before they reach mainnet. Testnets let developers and client teams test code in a public environment without using real funds. The delayed launch means Glamsterdam testing on Hoodi will start later than planned.

Why did ChainSecurity’s finding delay the launch?▾

ChainSecurity identified 13 real-world smart contracts that could be affected by Glamsterdam’s gas changes. It is coordinating responsible disclosure with the affected projects so they can review potential issues. Because testnet launches are part of upgrade preparation, the finding led to a postponement while those risks are assessed.

What are gas changes in Ethereum?▾

Gas is how Ethereum meters computational work and transaction execution. Changes to gas rules can alter the cost of specific operations, which may matter for contracts with tight gas assumptions. The report links Glamsterdam’s gas changes to the smart contracts under review.

Key takeaways

Delay Tied to Smart Contract Review

Why Gas Changes Can Matter for Contracts

Hoodi’s Role in Ethereum Testing

Security Review and Upgrade Coordination

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Ethereum Delays Glamsterdam Hoodi Testnet Launch After Security Review

Delay Tied to Smart Contract Review

Why Gas Changes Can Matter for Contracts

Hoodi’s Role in Ethereum Testing

Security Review and Upgrade Coordination

Frequently asked questions

Key takeaways

Common mistakes to avoid

Related reading

Delay Tied to Smart Contract Review

Why Gas Changes Can Matter for Contracts

Hoodi’s Role in Ethereum Testing

Security Review and Upgrade Coordination

Frequently asked questions

Key takeaways

Common mistakes to avoid

Related reading