CVEvulnerability

CVE-2023-34234

5.3 MEDIUM Published 2023-06-07 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-06-07
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-862

Description

OpenZeppelin Contracts is a library for smart contract development. By frontrunning the creation of a proposal, an attacker can become the proposer and gain the ability to cancel it. The attacker can do this repeatedly to try to prevent a proposal from being proposed at all. This impacts the `Governor` contract in v4.9.0 only, and the `GovernorCompatibilityBravo` contract since v4.3.0. This problem has been patched in 4.9.1 by introducing opt-in frontrunning protection. Users are advised to upgrade. Users unable to upgrade may submit the proposal creation transaction to an endpoint with frontrunning protection as a workaround.

Affected configurations

• openzeppelin contracts (>= 4.3.0 < 4.9.1) • openzeppelin contracts upgradeable (>= 4.3.0 < 4.9.1)

Related

Weakness · CWE (1)

  • CWE-862 Missing Authorization weakness

References