fix(story-nft): resolve reentrancy vulnerability #98
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sebsadface
requested review from
kingster-will,
Spablob and
LeoHChen
as code owners
kingster-will
approved these changes
Oct 16, 2024
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Description
This PR addresses a reentrancy vulnerability in the
mintfunction of theStoryBadgeNFTcontract. The issue arises because_safeTransferinvokes theonERC721Receivedhook, which could potentially re-enter themintfunction and bypass the used signature check.This issue is resolved by moving the
_usedSignature[signature] = trueupdate before the_safeTransferfunction so that the signature is marked as used before any external calls are made.