DxSale Says BNB Smart Chain Atomic Transaction Feature Exposed 2021 v1 Locker Contracts
According to DxSale, a compatibility issue between BNB Chain atomic transactions and legacy 2021 v1 lock contracts led to the exploit, while newer CertiK-audited versions were not affected.
BNB
Fact Check
PeckShield's own X alert directly states DxSale was drained ~$7.3M from 1,400 BNB Chain LPs, matching the claim. Cointelegraph and crypto.news independently corroborate the $7.3M figure, ~1,400 LPs, and the hidden-backdoor liquidity-locker mechanism. PANews adds that the affected pools were 2021-era locked pools, matching the '2021 BNB Chain Liquidity Pools' phrasing in the claim.
Summary
DxSale said the exploit was caused by a compatibility issue between BNB Chain atomic transactions and its 2021 v1 lock contracts. The platform said about 1,400 old LPs on BNB Chain lost $7.3 million on May 29. DxSale added that only the legacy v1 contracts were affected, while v2 and later lock contracts, which were audited by CertiK, were unaffected.
Terms & Concepts
- BNB Chain atomic transactions: A transaction mechanism that executes linked actions as a single unit, so either all steps succeed together or the whole transaction fails.
- lock contracts: Smart contracts used to lock tokens or liquidity positions under predefined conditions or for a set period.
- LPs: Liquidity provider positions or related liquidity pool assets used in decentralized trading protocols.