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…

PriorityP338high7.5CVSS 3.1

AVNACLPRNUINSUCNIHAN

EPSS

0.41%

33.5th percentile

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
openzeppelin	contracts	>= 4.1.0 < 4.7.1	4.7.1
openzeppelin	contracts	>= 4.1.0 < 4.7.1	4.7.1
openzeppelin	contracts-upgradeable	>= 4.1.0 < 4.7.1	4.7.1
openzeppelin	openzeppelin-contracts	—	—

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.