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Unlocking Security Risks in ERC-4337 Paymasters: Why Most Are Vulnerable Today

Unlocking Security Risks in ERC-4337 Paymasters: Why Most Are Vulnerable Today The rapid adoption of ERC-4337 smart contract wallets has brought a fresh wave of innovation to account abstraction and…

  • Open sponsorship access in validatePaymasterUserOp function allows unauthorized user funding.
  • Paymaster wallets lack emergency withdraw functions, leading to irreversible fund loss.
  • Weak signature checks enable forged user operations, bypassing security measures.

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