{"id":"CVE-2022-31170","aliases":["GHSA-qh9x-gcfh-pcrw"],"url":"https://o3.security/vulnerability/CVE-2022-31170","summary":" OpenZeppelin Contracts's ERC165Checker may revert instead of returning false","details":"OpenZeppelin Contracts is a library for smart contract development. Versions 4.0.0 until 4.7.1 are vulnerable to ERC165Checker reverting instead of returning `false`. `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. The issue was patched in version 4.7.1.","published":"2022-07-21T14:00:18Z","modified":"2026-07-16T03:46:10.695994154Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@openzeppelin/contracts","fixedVersion":"4.7.1"},{"ecosystem":"npm","name":"@openzeppelin/contracts-upgradeable","fixedVersion":"4.7.1"}],"fix":{"url":"https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552","label":"OpenZeppelin/openzeppelin-contracts#3552"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31170.json"},{"type":"ADVISORY","url":"https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-qh9x-gcfh-pcrw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-31170"},{"type":"FIX","url":"https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-16T03:46:10.695994154Z"}}