Project

Summary

The MembershipERC1155 contract, designed to function as an ERC-1155-compliant contract for membership tokens, does not fully implement the ERC-1155 standard. Specifically, the IMembershipERC1155 interface used in this contract lacks direct inheritance from IERC1155, which means it does not provide explicit support for the ERC-1155 interface ID (0xd9b67a26) as required by the ERC-165 standard.

Vulnerability Details

ERC-1155 contracts are required to implement the supportsInterface function from the ERC-165 standard and return true when the ERC-1155 interface ID (0xd9b67a26) is passed as an argument. However, the MembershipERC1155 contract uses a custom IMembershipERC1155 interface that does not inherit from IERC1155. As a result, the supportsInterface function only checks for IMembershipERC1155 but not the standard ERC-1155 interface, which causes incompatibility with ERC-1155-compliant applications, wallets, and other protocols.

In this code, only the IMembershipERC1155 interface ID is checked, without accounting for the IERC1155 interface ID (0xd9b67a26), which leads to incompatibility with standard ERC-1155 interface expectations.

Impact

Any applications, protocols, or wallets that rely on standard ERC-1155 interfaces will not recognize the MembershipERC1155 contract as ERC-1155 compliant.

Tools Used

Manual review

Recommendations