Sandbox Exploit Hits as Attackers Mint Unbacked Tokens on Base and BSC

The Sandbox has contained an exploit in its SAND cross-chain bridge on Base and BNB Smart Chain after an attacker minted unbacked tokens on both networks.

The project put the impact at under 0.01% of the total SAND supply, stating that tokens on Ethereum (ETH) and Polygon (POL) are unaffected and no user wallets were compromised.

The team said it has disabled bridging to and from Base and BSC, cutting off any route to move or redeem the minted supply.

The Sandbox warned holders not to buy, sell, or trade SAND on either network, citing that liquidity there is compromised. The project is taking a pre-incident snapshot and preparing compensation for qualifying liquidity providers, with a full post-mortem promised.