Ethereum core developers have hit the brakes on rolling out the major Glamsterdam upgrade to the Hoodi testnet after security audits uncovered critical gas-metering flaws that could break thousands of deployed smart contracts.
By Keisha Williams | November 11, 2026
If you hold Ethereum, which is currently changing hands around 2,082 USD, hearing that a landmark network upgrade has been put on hold might sound like bad news at first glance. Delays in tech usually trigger groans from investors eager for faster speeds and cheaper transactions. Yet for anyone whose savings sit inside decentralized lending pools, automated trading vaults, or savings apps, this deliberate pause is the best possible outcome. Catching a structural flaw on a test track before it hits live funds is exactly what separates mature financial software from reckless experiments.
The Core Concept
To understand what happened, it helps to look at how Ethereum evolves. The upcoming hard fork, dubbed Glamsterdam, is a package deal that fuses two major technical updates: Amsterdam, which reshapes the transaction rules and execution layer, and Gloas, which upgrades how network computers agree on blocks. Think of it like swapping out both the engine and the braking system of a high-speed passenger train while the train is already running down the track.
The primary mission behind Glamsterdam is long-term scalability. Over the past decade, Ethereum has become victim to its own popularity. Thousands of decentralized applications have piled up vast mountains of data, creating what developers call state bloat. When computers that run the network must store endless piles of old records, they require expensive hardware, making the network slower and more centralized.
To solve this, core developers proposed two new network rulebooks: EIP-8037 and EIP-8038. Together, these proposals reprice the network fuel, known as gas fees, by significantly increasing the cost of creating brand-new data storage and recalibrating the price of reading older records. However, a deep security audit by the cybersecurity firm ChainSecurity revealed an unexpected consequence: shifting these fee calculations breaks eight fundamental programming assumptions that thousands of older, active smart contracts depend on to keep user money safe.
How It Works Under the Hood
Smart contracts are essentially digital vending machines. When you insert crypto tokens and press a button, the contract automatically verifies the conditions and delivers your payout or interest without needing a bank clerk. Every single action that this vending machine performs requires a specific amount of gas to pay the network computers for their computational work.
Under the new architecture in EIP-8037, developers introduced a separate state-gas reservoir. Instead of pulling from a single fuel tank to execute calculations and store data, the system splits gas accounting into distinct compartments. This was designed to make room for massive capacity increases, including a planned bump of the test network block gas limit toward 200 million.
The trouble lies in how older smart contracts handle unexpected errors. Many popular financial contracts were written with strict mathematical safety nets: if a sub-step in an automated trade or deposit fails, the contract is designed to immediately run out of gas and cancel the entire operation. This emergency cancellation, known as a revert, acts like an automatic emergency brake that returns the user’s funds untouched.
Under the new dual-reservoir system, gas that would have been completely burned in older versions suddenly remains available in the tank. Instead of triggering an immediate emergency rollback, the smart contract’s backup error-handling code continues running on the leftover fuel. In several tested scenarios, this causes the application to permanently record a failed transaction as finished, corrupt internal bookkeeping, or trap user tokens in an unrecoverable state.
I checked the core developers’ project tracker against the original deployment calendar: the October 26 activation target for the Hoodi testnet was officially shelved, leaving the final release date open until teams resolve these edge cases.
- 8 broken invariants — core coding assumptions identified by ChainSecurity where altered gas costs cause legacy smart contracts to behave unpredictably.
- Separate gas reservoir — the architectural change under EIP-8037 that partitions execution fuel from permanent data storage costs.
- Testnet halt — the unanimous decision during All Core Developers Execution sessions to postpone the Hoodi rollout and shelve the planned 200 million gas limit expansion until safety patches are verified.
Real-World Applications
Why should an everyday investor care about abstract gas accounting rules? Because almost every modern decentralized finance protocol relies on nested, automated transactions that could be disrupted if these rule changes went live without adjustments.
Consider automated lending platforms. When market prices fluctuate, liquidation bots step in to pay off risky loans and protect depositor capital. These systems operate with pre-set gas allowances. If the cost to write new records jumps drastically under EIP-8037, liquidation transactions could unexpectedly exhaust their fuel midway, failing to close bad debt and leaving lending pools vulnerable to shortfalls.
Another major area of impact involves modern smart wallets and relayer networks. Many user-friendly wallets allow people to pay transaction fees in stablecoins rather than native ether, using automated relayer services behind the scenes. These relayers calculate exact fee reimbursements by checking the gas balance before and after an operation. Shifting the fundamental arithmetic of how state storage is billed can cause these services to miscalculate fees, leaving relayers out of pocket and prompting them to reject user transactions entirely.
Scalability & Limitations
This dilemma highlights the primary engineering headache facing mature blockchains: backward compatibility. When Apple updates an operating system, older mobile applications might crash until their developers release a patch. But on a public blockchain, smart contracts are immutable. Once code is deployed to the network, nobody can simply rewrite it unless the creators specifically installed upgrade keys from day one.
Core developers are caught in a genuine balancing act. On one hand, Ethereum desperately needs to manage its storage bloat. If saving permanent data remains too cheap, the network will grow too heavy for regular computers to verify, threatening decentralized security. On the other hand, repricing storage cannot come at the expense of breaking existing applications that currently secure billions in user value.
Cancelling the planned 200 million gas limit increase on the Hoodi testnet proves that developers are refusing to sacrifice security for headline speed records. Expanding block capacity before fixing underlying contract vulnerabilities would only multiply the risks across the wider ecosystem.
The Future Horizon
The road ahead for Glamsterdam now shifts to collaborative repair. The Ethereum Foundation has released an eight-point testing checklist and diagnostic tools to help application builders audit their own code against the newly discovered gas behaviors. Independent auditing firms including ChainSecurity and Dedaub are working alongside core teams to model alternative solutions.
Potential remedies on the table include creating specialized transaction rules that preserve legacy behavior for older contracts while applying the new pricing structure only to newly deployed applications. Other proposals suggest fine-tuning the state-gas reservoir mechanics so leftover fuel cannot accidentally trigger flawed error handlers.
While the Hoodi testnet fork remains paused without a firm reschedule date, broader development across the Ethereum roadmap continues. With crypto market sentiment lingering in a cautious zone at 29 on the Fear & Greed Index, market participants should view this delay as an encouraging sign of maturity. Halting an upgrade to protect existing investor funds reinforces the network’s reputation as a reliable settlement foundation for global finance.
Keisha Williams’s take
Patient engineering always beats hasty rollouts, making this deliberate pause Ethereum’s most reassuring governance moment of 2026. Deliberations across the next All Core Developers Execution call will reveal whether researchers can shield older applications without discarding their state-gas reservoir model. A rushed mainnet compromise that bypasses full auditor sign-off would instantly turn my praise into serious alarm.
The cryptocurrency market remains highly volatile. This article is for informational purposes only and does not constitute financial advice.
auditors catching a gas-metering flaw on Hoodi before mainnet is literally the system working. imagine thousands of deployed contracts just breaking post-fork because someone rushed the deploy
^ this. and ETH sitting around 2,082 barely reacting tells you the market already prices in upgrade slips. nobody sane expected Glamsterdam on schedule
every major upgrade since the merge has slipped at least a few weeks. a paused testnet beats a mainnet incident any day of the week
those delays were mostly client sync stuff tho. a critical gas-metering bug that breaks existing contracts is a much bigger deal than a scheduling slip