CVE-2024-45304: Openzeppelin Contracts

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Cairo-Contracts are OpenZeppelin Contracts written in Cairo for Starknet, a decentralized ZK Rollup. This vulnerability can lead to unauthorized ownership transfer, contrary to the original owner's intention of leaving the contract without an owner. It introduces a security risk where an unintended party (pending owner) can gain control of the contract after the original owner has renounced ownership. This could also be used by a malicious owner to simulate leaving a contract without an owner, to later regain ownership by previously having proposed himself as a pending owner. This issue has been addressed in release version 0.16.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

• Openzeppelin Contracts: before 0.16.0 (fixed in 0.16.0)

Published 2024-08-31. Last modified 2026-06-17.