{"id":"CVE-2024-45304","aliases":["EUVD-2024-41428","GHSA-w2px-25pm-2cf9"],"status":"published","title":"OwnableTwoStep allows a pending owner to accept ownership after the original owner has renounced ownership in cairo-contracts","description":"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.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00479,"percentile":0.41675,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-670"],"published":"2024-08-30T23:51:01Z","modified":"2026-10-28T02:31:03Z","products":[{"vendor":"openzeppelin","product":"cairo-contracts"},{"vendor":"openzeppelin","product":"contracts"}],"references":[{"url":"https://github.com/OpenZeppelin/cairo-contracts/security/advisories/GHSA-w2px-25pm-2cf9","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/OpenZeppelin/cairo-contracts/commit/ef87d7847980e0cf83f4b7f3ff23e6590fb643ec","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/OpenZeppelin/cairo-contracts/releases/tag/v0.16.0","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45304.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45304","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-45304","title":"OwnableTwoStep allows a pending owner to accept ownership after the original owner has renounced ownership in cairo-contracts","description":"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.","status":"published","published":"2024-08-30T23:51:01.301Z","modified":"2024-09-03T19:52:20.818Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-670"],"updated_at":"2026-11-02T14:34:08.500935Z"}],"euvd":[{"id":"EUVD-2024-41428","description":"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.","status":"published","published":"2024-08-30T23:51:01Z","modified":"2024-09-03T19:52:20Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-03T00:56:05.029422Z"}],"nvd":[{"id":"CVE-2024-45304","description":"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.","status":"published","published":"2024-08-31T00:15:05.493Z","modified":"2026-06-17T07:53:59.29Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-670"],"updated_at":"2026-11-02T14:10:24.514378Z"}],"osv":[{"id":"CVE-2024-45304","title":"OwnableTwoStep allows a pending owner to accept ownership after the original owner has renounced ownership in cairo-contracts","description":"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.","status":"published","published":"2024-08-30T23:51:01.301Z","modified":"2026-10-28T02:31:03.188530911Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-670"],"updated_at":"2026-11-02T15:44:42.790566Z"}]}}