{"id":"CVE-2023-45810","aliases":["EUVD-2023-2752","GHSA-hr4f-6jh8-f2vq","GO-2023-2121"],"status":"published","title":"OpenFGA denial of service","description":"OpenFGA is a flexible authorization/permission engine built for developers and inspired by Google Zanzibar. Affected versions of OpenFGA are vulnerable to a denial of service attack. When a number of `ListObjects` calls are executed, in some scenarios, those calls are not releasing resources even after a response has been sent, and given a sufficient call volume the service as a whole becomes unresponsive. This issue has been addressed in version 1.3.4 and the upgrade is considered backwards compatible. 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:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00608,"percentile":0.49401,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2023-10-17T22:29:00Z","modified":"2026-10-28T02:31:07Z","fixes":[{"ecosystem":"Go","package":"github.com/openfga/openfga","fixed_in":["1.3.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/openfga/openfga","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.4"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/openfga/openfga","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.3.4"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/openfga/openfga","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.3.4"}]}]}],"products":[{"vendor":"openfga","product":"openfga"}],"references":[{"url":"https://github.com/openfga/openfga/security/advisories/GHSA-hr4f-6jh8-f2vq","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45810","tags":["advisory"]},{"url":"https://github.com/openfga/openfga/releases/tag/v1.3.4","tags":["web"]},{"url":"https://github.com/advisories/GHSA-hr4f-6jh8-f2vq"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45810.json","tags":["advisory"]},{"url":"https://github.com/openfga/openfga","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-45810","title":"OpenFGA denial of service","description":"OpenFGA is a flexible authorization/permission engine built for developers and inspired by Google Zanzibar. Affected versions of OpenFGA are vulnerable to a denial of service attack. When a number of `ListObjects` calls are executed, in some scenarios, those calls are not releasing resources even after a response has been sent, and given a sufficient call volume the service as a whole becomes unresponsive. This issue has been addressed in version 1.3.4 and the upgrade is considered backwards compatible. There are no known workarounds for this vulnerability.","status":"published","published":"2023-10-17T22:29:00.293Z","modified":"2024-09-13T15:34:47.147Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:22.984825Z"}],"euvd":[{"id":"EUVD-2023-2752","description":"OpenFGA is a flexible authorization/permission engine built for developers and inspired by Google Zanzibar. Affected versions of OpenFGA are vulnerable to a denial of service attack. When a number of `ListObjects` calls are executed, in some scenarios, those calls are not releasing resources even after a response has been sent, and given a sufficient call volume the service as a whole becomes unresponsive. This issue has been addressed in version 1.3.4 and the upgrade is considered backwards compatible. There are no known workarounds for this vulnerability.","status":"published","published":"2023-10-17T22:29:00Z","modified":"2024-09-13T15:34:47Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:55:55.933062Z"}],"ghsa":[{"id":"GHSA-hr4f-6jh8-f2vq","title":"OpenFGA DoS vulnerability","description":"## Overview\nOpenFGA is vulnerable to a DoS attack. When a number of ListObjects calls are executed, in some scenarios, those calls are not releasing resources even after a response has been sent, and the service as a whole becomes unresponsive.\n\n## Fix\nUpgrade to v1.3.4. This upgrade is backwards compatible.","status":"published","published":"2023-10-18T18:25:58Z","modified":"2023-11-12T05:01:25Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:21.209096Z"}],"nvd":[{"id":"CVE-2023-45810","description":"OpenFGA is a flexible authorization/permission engine built for developers and inspired by Google Zanzibar. Affected versions of OpenFGA are vulnerable to a denial of service attack. When a number of `ListObjects` calls are executed, in some scenarios, those calls are not releasing resources even after a response has been sent, and given a sufficient call volume the service as a whole becomes unresponsive. This issue has been addressed in version 1.3.4 and the upgrade is considered backwards compatible. There are no known workarounds for this vulnerability.","status":"published","published":"2023-10-17T23:15:12.403Z","modified":"2026-06-17T06:29:34.21Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:08:39.058878Z"}],"osv":[{"id":"CVE-2023-45810","title":"OpenFGA denial of service","description":"OpenFGA is a flexible authorization/permission engine built for developers and inspired by Google Zanzibar. Affected versions of OpenFGA are vulnerable to a denial of service attack. When a number of `ListObjects` calls are executed, in some scenarios, those calls are not releasing resources even after a response has been sent, and given a sufficient call volume the service as a whole becomes unresponsive. This issue has been addressed in version 1.3.4 and the upgrade is considered backwards compatible. There are no known workarounds for this vulnerability.","status":"published","published":"2023-10-17T22:29:00.293Z","modified":"2026-10-28T02:31:07.123536422Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:34.287121Z"},{"id":"GHSA-hr4f-6jh8-f2vq","title":"OpenFGA DoS vulnerability","description":"## Overview\nOpenFGA is vulnerable to a DoS attack. When a number of ListObjects calls are executed, in some scenarios, those calls are not releasing resources even after a response has been sent, and the service as a whole becomes unresponsive.\n\n## Fix\nUpgrade to v1.3.4. This upgrade is backwards compatible.","status":"published","published":"2023-10-18T18:25:58Z","modified":"2024-08-21T14:56:46.079008Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:49.621585Z"},{"id":"GO-2023-2121","title":"OpenFGA DoS vulnerability in github.com/openfga/openfga","description":"OpenFGA DoS vulnerability in github.com/openfga/openfga","status":"published","published":"2024-08-21T14:30:22Z","modified":"2026-03-03T04:54:17.691399Z","updated_at":"2026-11-02T15:47:01.185262Z"}]}}