CVE-2022-31172

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.

• CWE-20
• CWE-347

• https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552Patch, Third Party Advisory
• https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4g63-c64m-25w9Third Party Advisory
• https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552Patch, Third Party Advisory
• https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4g63-c64m-25w9Third Party Advisory

Published

Jul 22, 2022

Last Modified

Jun 17, 2026

Status

Modified

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