Description
OpenZeppelin Contracts is a library for secure smart contract development. This issue concerns instances of Governor that use the module `GovernorVotesQuorumFraction`, a mechanism that determines quorum requirements as a percentage of the voting token's total supply. In affected instances, when a proposal is passed to lower the quorum requirements, past proposals may become executable if they had been defeated only due to lack of quorum, and the number of votes it received meets the new quorum requirement. Analysis of instances on chain found only one proposal that met this condition, and we are actively monitoring for new occurrences of this particular issue. This issue has been patched in v4.7.2. Users are advised to upgrade. Users unable to upgrade should consider avoiding lowering quorum requirements if a past proposal was defeated for lack of quorum.
Remediation
References
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3561
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-xrc4-737v-9q75
Related Vulnerabilities
CVE-2020-15252 Vulnerability in maven package org.xwiki.platform:xwiki-platform-oldcore
CVE-2023-26156 Vulnerability in npm package chromedriver
CVE-2014-0035 Vulnerability in maven package org.apache.cxf:cxf-bundle
CVE-2021-23342 Vulnerability in npm package docsify
CVE-2020-6836 Vulnerability in maven package org.webjars.npm:hot-formula-parser