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Sui Mainnet Suffers Three Outages Over Two Days, Recovers Without Transaction Rollbacks

Sui Mainnet Suffers Three Outages Over Two Days, Recovers Without Transaction Rollbacks

Sui Foundation says May 28-29, 2026 mainnet outages tied to v1.72 bugs in gas charging logic and randomness state were fixed, with funds safe and no confirmed transactions rolled back.

SUI

Fact Check
The Sui Foundation's own incident review at blog.sui.io directly confirms every key element of the claim: three outages on May 28-29, 2026, tied to v1.72 bugs in gas charging logic (address balances/gas smashing) and randomness state preservation, with no funds at risk and no committed transactions reverted. Official @SuiNetwork posts and The Block's reporting independently corroborate.
Summary

Sui Foundation said two bugs introduced in the v1.72 upgrade caused three Sui mainnet outages on May 28 and 29, 2026. The disruptions were linked to gas charging logic and a randomness state bug, with recoveries reported at 13:30 PT on Thursday, 8:30 PT on Friday, and 19:20 PT on Friday. Sui said user funds were never at risk, both bugs have been fixed, and no confirmed transactions were rolled back. A separate report also cited a fourth downtime within 48 hours, though the provided materials do not clarify whether that was distinct from the three officially attributed v1.72-related outages.

Terms & Concepts
  • Mainnet: A live blockchain network where real transactions and assets are processed and finalized.
  • gas charging logic: The mechanism that calculates and deducts transaction fees required to process activity on a blockchain.
  • Validator: A network participant that verifies transactions and helps keep a blockchain operating correctly.