Description
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.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_confirm
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4g63-c64m-25w9
Patch, Third Party Advisory x_refsource_misc
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552
Scores
CVSS v3
7.5
EPSS
0.0040
EPSS Percentile
31.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-20
CWE-347
Status
published
Products (3)
openzeppelin/contracts
4.1.0 - 4.7.1
openzeppelin/contracts
4.1.0 - 4.7.1npm
openzeppelin/contracts-upgradeable
4.1.0 - 4.7.1npm
Published
Jul 22, 2022
Tracked Since
Feb 18, 2026