Sandbox Halts SAND Bridge on Base and BNB Smart Chain After Exploit
The Sandbox has suspended its SAND bridge on Base and BNB Smart Chain after detecting an exploit that allowed attackers to mint unbacked tokens on both networks.
The project confirmed the incident on August 22, 2026, stating it is contained, but bridging to and from Base and BSC is currently disabled to isolate affected SAND supply.
The issue occurred at the bridge layer, where tokens are typically locked on the native chain before an equivalent amount of tokens is minted on the destination chain. When this mechanism is exploited, attackers can generate wrapped tokens without corresponding backing assets.
The Sandbox expanded SAND to BNB Smart Chain and Base in 2024 via LayerZero to enable token movement across multiple networks rather than concentrating solely on Ethereum and Polygon.