openzeppelin/openzeppelin-contracts-upgradeable · Security
UUPSUpgradeable vulnerability in @openzeppelin/contracts-upgradeable
- GHSA ID
- GHSA-q4h9-46xg-m3x9
- Severity
- critical
- Published
- Updated
Description
Impact
Upgradeable contracts using UUPSUpgradeable may be vulnerable to an attack affecting uninitialized implementation contracts. We will update this advisory with more information soon.
Patches
A fix is included in version 4.3.2 of @openzeppelin/contracts and @openzeppelin/contracts-upgradeable.
Workarounds
Initialize implementation contracts using UUPSUpgradeable by invoking the initializer function (usually called initialize). An example is provided in the forum.
References
A post-mortem will be published in a few days in the OpenZeppelin Forum.
For more information
If you have any questions or comments about this advisory, or need assistance executing the mitigation, email us at [email protected].