CVE-2023-49798

CVSS 3.1 Score 5.9 of 10 (medium)

Details

Published Dec 9, 2023
Updated: Dec 13, 2023
CWE ID 670

Summary

CVE-2023-49798 is a vulnerability in OpenZeppelin Contracts, a library for smart contract development. The issue affects the version 4.9.4 of the library, specifically the `Multicall.sol` file in `@openzeppelin/[email protected]` and `@openzeppelin/[email protected]`. Due to a merge issue during porting the 5.0.1 patch, all subcalls are executed twice, which can lead to unintentional duplication of operations like asset transfers. The duplicated delegatecall was removed in version 4.9.5, and users are advised to upgrade as there are no known workarounds for this issue. This vulnerability has a base severity of MEDIUM and an exploitability score of 2.2 out of 10, indicating a moderate level of risk.

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