The DGLD Cross-Chain Minting Exploit: How an OP Stack Bridge Vulnerability Let Attackers Print Gold-Backed Tokens From Nothing

The DGLD Cross-Chain Minting Exploit: How an OP Stack Bridge Vulnerability Let Attackers Print Gold-Backed Tokens From Nothing A deep dive into February 2026's DGLD exploit — where a smart contract vulnerability on the Ethereum↔Base bridge allowed unauthorized minting of 100M unbacked tokens, and the 5 cross-chain minting safeguards every L2 bridge deployer needs. The 2.5-Hour Heist That Minted Gold From Thin Air On February 23, 2026, attackers discovered they could create DGLD tokens on Base — a gold-backed stablecoin — without any corresponding gold or Ethereum-side collateral. Within 2.5 hours, they minted over 100 million unbacked DGLD tokens on Base, where legitimate circulation was only ~70.8 tokens. The physical gold was never at risk. But the smart contract layer was completely compromised. Here's how it happened, why OP Stack bridges are structurally exposed, and the 5 defensive patterns that would have stopped it. Background: How DGLD's Cross-Chain Architecture Works DGLD ope