{"id":"CVE-2023-40579","aliases":["GHSA-jcf2-mxr2-gmqp","GO-2023-2028"],"url":"https://o3.security/vulnerability/CVE-2023-40579","summary":"OpenFGA Authorization Bypass","details":"## Overview\nSome end users of OpenFGA v1.3.0 or earlier are vulnerable to authorization bypass when calling the ListObjects API. This means that the API sometimes returns more objects than it should.\n\n## Am I Affected?\nThe vulnerability affects customers using ListObjects with specific models. The affected models contain expressions of type `rel1 from type1`.\n\n## Fix\nUpdate to v1.3.1.\n\n## Backward Compatibility\nThis update is backward compatible.","published":"2023-08-25T19:46:40.700Z","modified":"2026-10-28T02:30:53.844601939Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00451,"percentile":0.37493,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/openfga/openfga","fixedVersion":"1.3.1"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/openfga/openfga/releases/tag/v1.3.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/40xxx/CVE-2023-40579.json"},{"type":"ADVISORY","url":"https://github.com/openfga/openfga/security/advisories/GHSA-jcf2-mxr2-gmqp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40579"},{"type":"PACKAGE","url":"https://github.com/openfga/openfga"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:53.844601939Z"}}