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Incorrect Calculation


Severity Medium
Score 6.5/10


OpenZeppelin Contracts is a library for secure smart contract development. The ERC721Consecutive contract designed for minting NFTs in batches does not update balances when a batch has size 1 and consists of a single token. Subsequent transfers from the receiver of that token may overflow the balance as reported by "balanceOf". The issue exclusively presents with batches of size 1. This issue affects @openzeppelin/contracts and @openzeppelin/contracts-upgradeable versions 4.8.0-rc.2 through 4.8.1.

  • LOW
  • HIGH
  • NONE
  • LOW
  • NONE
  • NONE

CWE-682 - Incorrect Calculation

The software performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.

Advisory Timeline

  • Published