Major Outage Strikes Sui Blockchain Following Discovery of Cost Calculation Flaw in Latest Update
A crash bug in the gas-charging logic of the Sui 1.72 release halted all mainnet block production on May 29, 2026. The outage lasted exactly five hours and 55 minutes. The Sui core team confirmed the root cause via X. An edge-case bug in the consensus commit logic caused validators to reach different conclusions when processing conflicting transactions. More than one-third of the total validator stake signed a different block digest, making certification impossible. Onchain data from SuiScan showed no new checkpoints during the window. All decentralized finance (DeFi) activity on the network froze.
Validators manually purge corrupted consensus data to restore block productionRestoring the network required manual coordination across the entire validator set. Node operators identified the divergence point, purged incorrect consensus data, and deployed corrected logic. More than two-thirds of the network stake completed the emergency upgrade before block production resumed. The recovery required coordinated action among top-tier staking entities to synchronize the correct logic sequence before the chain could restart. Some nodes continued to show degraded performance after the chain returned online.
"Activity on Sui mainnet has resumed after a halt due to a crash bug in the gas charging logic introduced by the 1.72 release. A full incident review will be shared in the coming days.", 28 May 2026.
— Sui Network, official account
SUI token drops 6.6% to $0.90 during the outageThe Sui (SUI) token dropped 6.6% during the outage. It reached a low of $0.90 before partially recovering once block production resumed. SUI traded at $0.8968 at the time of publication, down 2.16% over 24 hours (CoinPaprika, 29 May 2026). Its market capitalization stood at approximately $3.59 billion. Trading volume fell 33.3% over the same 24-hour period to $367 million.
Second major Sui outage of 2026 follows a similar January stallThe May 29 incident marks the second major Sui network outage of 2026. A similar consensus stall in January 2026 kept validators offline for more than six hours. Both incidents originated from bugs introduced through version updates. The pattern points to recurring issues in upgrade deployment. The Sui core team said a full post-incident review will be published in the coming days. Restoring the network required manual coordination across the entire validator set. Node operators identified the divergence point, purged incorrect consensus data, and deployed corrected logic. More than two-thirds of the network stake completed the emergency upgrade before block production resumed. The recovery required coordinated action among top-tier staking entities to synchronize the correct logic sequence before the chain could restart. Some nodes continued to show degraded performance after the chain returned online.
"Activity on Sui mainnet has resumed after a halt due to a crash bug in the gas charging logic introduced by the 1.72 release. A full incident review will be shared in the coming days.", 28 May 2026.
— Sui Network, official account
SUI token drops 6.6% to $0.90 during the outageThe Sui (SUI) token dropped 6.6% during the outage. It reached a low of $0.90 before partially recovering once block production resumed. SUI traded at $0.8968 at the time of publication, down 2.16% over 24 hours (CoinPaprika, 29 May 2026). Its market capitalization stood at approximately $3.59 billion. Trading volume fell 33.3% over the same 24-hour period to $367 million.
Second major Sui outage of 2026 follows a similar January stallThe May 29 incident marks the second major Sui network outage of 2026. A similar consensus stall in January 2026 kept validators offline for more than six hours. Both incidents originated from bugs introduced through version updates. The pattern points to recurring issues in upgrade deployment. The Sui core team said a full post-incident review will be published in the coming days. "Activity on Sui mainnet has resumed after a halt due to a crash bug in the gas charging logic introduced by the 1.72 release. A full incident review will be shared in the coming days.", 28 May 2026.
— Sui Network, official account
SUI token drops 6.6% to $0.90 during the outageThe Sui (SUI) token dropped 6.6% during the outage. It reached a low of $0.90 before partially recovering once block production resumed. SUI traded at $0.8968 at the time of publication, down 2.16% over 24 hours (CoinPaprika, 29 May 2026). Its market capitalization stood at approximately $3.59 billion. Trading volume fell 33.3% over the same 24-hour period to $367 million.
Second major Sui outage of 2026 follows a similar January stallThe May 29 incident marks the second major Sui network outage of 2026. A similar consensus stall in January 2026 kept validators offline for more than six hours. Both incidents originated from bugs introduced through version updates. The pattern points to recurring issues in upgrade deployment. The Sui core team said a full post-incident review will be published in the coming days. SUI token drops 6.6% to $0.90 during the outageThe Sui (SUI) token dropped 6.6% during the outage. It reached a low of $0.90 before partially recovering once block production resumed. SUI traded at $0.8968 at the time of publication, down 2.16% over 24 hours (CoinPaprika, 29 May 2026). Its market capitalization stood at approximately $3.59 billion. Trading volume fell 33.3% over the same 24-hour period to $367 million.
Second major Sui outage of 2026 follows a similar January stallThe May 29 incident marks the second major Sui network outage of 2026. A similar consensus stall in January 2026 kept validators offline for more than six hours. Both incidents originated from bugs introduced through version updates. The pattern points to recurring issues in upgrade deployment. The Sui core team said a full post-incident review will be published in the coming days. The Sui (SUI) token dropped 6.6% during the outage. It reached a low of $0.90 before partially recovering once block production resumed. SUI traded at $0.8968 at the time of publication, down 2.16% over 24 hours (CoinPaprika, 29 May 2026). Its market capitalization stood at approximately $3.59 billion. Trading volume fell 33.3% over the same 24-hour period to $367 million.
Second major Sui outage of 2026 follows a similar January stallThe May 29 incident marks the second major Sui network outage of 2026. A similar consensus stall in January 2026 kept validators offline for more than six hours. Both incidents originated from bugs introduced through version updates. The pattern points to recurring issues in upgrade deployment. The Sui core team said a full post-incident review will be published in the coming days. The May 29 incident marks the second major Sui network outage of 2026. A similar consensus stall in January 2026 kept validators offline for more than six hours. Both incidents originated from bugs introduced through version updates. The pattern points to recurring issues in upgrade deployment. The Sui core team said a full post-incident review will be published in the coming days. Cryptocurrencies are highly volatile and involve significant risk. You may lose part or all of your investment. All information on Coinpaprika is provided for informational purposes only and does not constitute financial or investment advice. Always conduct your own research (DYOR) and consult a qualified financial advisor before making investment decisions. Coinpaprika is not liable for any losses resulting from the use of this information.