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GHSA-qh9x-gcfh-pcrw

GitHub Security Advisory

OpenZeppelin Contracts's ERC165Checker may revert instead of returning false

✓ GitHub Reviewed HIGH Has CVE

Advisory Details

### Impact

`ERC165Checker.supportsInterface` is designed to always successfully return a boolean, and under no circumstance revert. However, an incorrect assumption about Solidity 0.8's `abi.decode` allows some cases to revert, given a target contract that doesn't implement EIP-165 as expected, specifically if it returns a value other than 0 or 1.

The contracts that may be affected are those that use `ERC165Checker` to check for support for an interface and then handle the lack of support in a way other than reverting.

### Patches

The issue was patched in 4.7.1.

### References

https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552

### For more information

If you have any questions or comments about this advisory, or need assistance deploying the fix, email us at [[email protected]](mailto:[email protected]).

Affected Packages

npm @openzeppelin/contracts
Affected versions: 4.0.0 (fixed in 4.7.1)
npm @openzeppelin/contracts-upgradeable
Affected versions: 4.0.0 (fixed in 4.7.1)

Related CVEs

Key Information

GHSA ID
GHSA-qh9x-gcfh-pcrw
Published
July 21, 2022 10:33 PM
Last Modified
August 10, 2022 11:52 PM
CVSS Score
7.5 /10
Primary Ecosystem
npm
Primary Package
@openzeppelin/contracts
GitHub Reviewed
✓ Yes

Dataset

Last updated: July 12, 2025 6:29 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.