{"id":"CVE-2022-31172","summary":"OpenZeppelin Contracts's SignatureChecker may revert on invalid EIP-1271 signers","details":"OpenZeppelin Contracts is a library for smart contract development. Versions 4.1.0 until 4.7.1 are vulnerable to the SignatureChecker reverting. `SignatureChecker.isValidSignatureNow` is not expected to 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-1271 as expected. The contracts that may be affected are those that use `SignatureChecker` to check the validity of a signature and handle invalid signatures in a way other than reverting. The issue was patched in version 4.7.1.","aliases":["GHSA-4g63-c64m-25w9"],"modified":"2026-08-12T03:51:18.854203185Z","published":"2022-07-21T13:55:11Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-20"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31172.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31172.json"},{"type":"ADVISORY","url":"https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4g63-c64m-25w9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-31172"},{"type":"FIX","url":"https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openzeppelin/openzeppelin-contracts","events":[{"introduced":"23869e5b2a7c6b9c3e27dee4289615b8cf50e36b"},{"fixed":"3b8b4ba82c880c31cd3b96dd5e15741d7e26658e"}],"database_specific":{"cpe":"cpe:2.3:a:openzeppelin:contracts:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"4.1.0"},{"fixed":"4.7.1"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-31172.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}