{"id":"GHSA-699g-q6qh-q4v8","summary":"OpenZeppelin Contracts and Contracts Upgradeable duplicated execution of subcalls in v4.9.4","details":"\n### Context\nMerge conflict resolution issue when porting the v5.0.1 `Multicall` update to the v4.9 branch caused a duplicated line.\n\n### Impact\nVersions using `Multicall` from `@openzeppelin/contracts@4.9.4` and `@openzeppelin/contracts-upgradeable@4.9.4` will execute each subcall twice. Concretely, this exposes a user to unintentionally duplicate operations like asset transfers.\n\n### Patches\nThe duplicated `delegatecall` was removed in 4.9.5. The 4.9.4 version is marked as deprecated.","aliases":["CVE-2023-49798"],"modified":"2026-09-10T03:49:59.502012624Z","published":"2023-12-12T00:49:25Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2023-12-12T00:49:25Z","nvd_published_at":"2023-12-09T00:15:06Z","cwe_ids":["CWE-670"],"severity":"MODERATE"},"references":[{"type":"WEB","url":"https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-699g-q6qh-q4v8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49798"},{"type":"WEB","url":"https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commit/31f9fb9d171f60b2271b2b9c6f62d43302bf9489"},{"type":"WEB","url":"https://github.com/OpenZeppelin/openzeppelin-contracts/commit/88ac712e06832bce73b41e8166cded2729e25205"},{"type":"PACKAGE","url":"https://github.com/OpenZeppelin/openzeppelin-contracts"}],"affected":[{"package":{"name":"@openzeppelin/contracts","ecosystem":"npm","purl":"pkg:npm/%40openzeppelin/contracts"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.9.4"},{"fixed":"4.9.5"}]}],"versions":["4.9.4"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/12/GHSA-699g-q6qh-q4v8/GHSA-699g-q6qh-q4v8.json"}},{"package":{"name":"@openzeppelin/contracts-upgradeable","ecosystem":"npm","purl":"pkg:npm/%40openzeppelin/contracts-upgradeable"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.9.4"},{"fixed":"4.9.5"}]}],"versions":["4.9.4"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/12/GHSA-699g-q6qh-q4v8/GHSA-699g-q6qh-q4v8.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}