A software flaw in Reth's legacy state-root calculation system prompted emergency patches across several Ethereum-linked networks this week, according to CryptoSlate. Georgios Konstantopoulos, chief technology officer at Paradigm, reported on Nov. 5 that the bug could produce incorrect blockchain state calculations when certain smart contract storage configurations were processed, the outlet said.
Developers responded with new releases: Reth itself, Optimism's version of the client, and Base each published updated builds, CryptoSlate reported. The outlet said Tempo's research team had found the issue through fuzzing, an automated testing method that feeds software unusual inputs to surface errors, and that Tempo's own implementation was patched as well. Base, which is linked to Coinbase, said in a Nov. 5 status update cited by CryptoSlate that it had identified the Reth issue on Nov. 4 and patched its systems right away, stating that the network's integrity was not affected.
Separately, Frax Finance said on Nov. 5 that LayerZero had paused certain cross-chain transfer routes while developers reviewed the situation, according to the same CryptoSlate report. The article did not identify the specific storage configurations that triggered the error. It remains unclear, per the report, whether every independently run node has installed the patched software, or when LayerZero and other restricted services will return to normal operation.
Join us on Telegram
New Block FOMO stories as they publish, plus a daily recap of the most-read news.
Join @BlockFOMOnewsRelated stories
GOPAX Halts Trading, Withdrawals After Hacking Threat
South Korean exchange GOPAX suspended withdrawals and trading on November 6 following hacking threats, with no confirmed asset loss, Yonhap reports.
Polkadot Treasury Loses $1.38 Million in dotUSD Exploit
Parity Technologies reported that an attacker drained $1.38 million from Polkadot's Treasury via a dotUSD stablecoin flaw patched in code months before the attack.
BitMart confirms $391,000 hack during wind-down restructuring
BitMart's founder confirmed a $391,000 hack across Base, Arbitrum and Optimism wallets on November 2, 2026, as the exchange works through restructuring.
Kraken limits accounts in suspected $133M EU crypto theft probe
Investigator ZachXBT raised his estimate of a suspected European crypto theft to $133 million as Kraken restricted linked accounts, Cointelegraph reported.
Sources & evidence
News, not financial advice. Memecoins carry substantial risk. Market snapshots can change quickly. This story was produced by the Block FOMO desk with AI assistance and checked against its sources. Editorial policy.