{"id":"CVE-2024-23820","aliases":["EUVD-2024-0426","GHSA-rxpw-85vw-fx87","GO-2024-2477"],"status":"published","title":"OpenFGA DoS","description":"OpenFGA, an authorization/permission engine, is vulnerable to a denial of service attack in versions prior to 1.4.3. In some scenarios that depend on the model and tuples used, a call to `ListObjects` may not  release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an `out of memory` error and terminate. Version 1.4.3 contains a patch for this issue.","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":"2026-11-12","score":0.00734,"percentile":0.54911,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-401","CWE-770"],"published":"2024-01-26T16:37:27Z","modified":"2026-10-28T02:31:08Z","fixes":[{"ecosystem":"Go","package":"github.com/openfga/openfga","fixed_in":["1.4.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/openfga/openfga","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/openfga/openfga","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/openfga/openfga","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.3"}]}]}],"products":[{"vendor":"openfga","product":"openfga"}],"references":[{"url":"https://github.com/openfga/openfga/security/advisories/GHSA-rxpw-85vw-fx87","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/openfga/openfga/commit/908ac85c8b7769c8042cca31886df8db01976c39","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/openfga/openfga/releases/tag/v1.4.3","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-23820","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rxpw-85vw-fx87"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/23xxx/CVE-2024-23820.json","tags":["advisory"]},{"url":"https://github.com/openfga/openfga","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-23820","title":"OpenFGA DoS","description":"OpenFGA, an authorization/permission engine, is vulnerable to a denial of service attack in versions prior to 1.4.3. In some scenarios that depend on the model and tuples used, a call to `ListObjects` may not  release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an `out of memory` error and terminate. Version 1.4.3 contains a patch for this issue.","status":"published","published":"2024-01-26T16:37:27.065Z","modified":"2024-08-29T18:13:51.862Z","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-770"],"updated_at":"2026-11-02T14:34:05.444281Z"}],"euvd":[{"id":"EUVD-2024-0426","description":"OpenFGA, an authorization/permission engine, is vulnerable to a denial of service attack in versions prior to 1.4.3. In some scenarios that depend on the model and tuples used, a call to `ListObjects` may not  release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an `out of memory` error and terminate. Version 1.4.3 contains a patch for this issue.","status":"published","published":"2024-01-26T16:37:27Z","modified":"2024-08-29T18:13:51Z","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":"2026-11-03T00:56:07.428873Z"}],"ghsa":[{"id":"GHSA-rxpw-85vw-fx87","title":"OpenFGA denial of service","description":"## Overview\nOpenFGA is vulnerable to a DoS attack. In some scenarios that depend on the model and tuples used, a call to ListObjects may not  release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an \"out of memory\" error and terminate.\n\n## Fix\nUpgrade to v1.4.3. This upgrade is backwards compatible.","status":"published","published":"2024-01-26T20:12:00Z","modified":"2024-02-01T21:03:38Z","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-401","CWE-770"],"updated_at":"2026-11-02T14:37:34.405364Z"}],"nvd":[{"id":"CVE-2024-23820","description":"OpenFGA, an authorization/permission engine, is vulnerable to a denial of service attack in versions prior to 1.4.3. In some scenarios that depend on the model and tuples used, a call to `ListObjects` may not  release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an `out of memory` error and terminate. Version 1.4.3 contains a patch for this issue.","status":"published","published":"2024-01-26T17:15:13.287Z","modified":"2026-06-17T07:13:40.417Z","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":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-770","CWE-401"],"updated_at":"2026-11-02T14:09:32.147098Z"}],"osv":[{"id":"CVE-2024-23820","title":"OpenFGA DoS","description":"OpenFGA, an authorization/permission engine, is vulnerable to a denial of service attack in versions prior to 1.4.3. In some scenarios that depend on the model and tuples used, a call to `ListObjects` may not  release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an `out of memory` error and terminate. Version 1.4.3 contains a patch for this issue.","status":"published","published":"2024-01-26T16:37:27.065Z","modified":"2026-10-28T02:31:08.389206545Z","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-770"],"updated_at":"2026-11-02T15:44:38.897406Z"},{"id":"GHSA-rxpw-85vw-fx87","title":"OpenFGA denial of service","description":"## Overview\nOpenFGA is vulnerable to a DoS attack. In some scenarios that depend on the model and tuples used, a call to ListObjects may not  release memory properly. So when a sufficiently high number of those calls are executed, the OpenFGA server can create an \"out of memory\" error and terminate.\n\n## Fix\nUpgrade to v1.4.3. This upgrade is backwards compatible.","status":"published","published":"2024-01-26T20:12:00Z","modified":"2026-09-10T03:50:05.091737442Z","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-401","CWE-770"],"updated_at":"2026-11-02T15:46:56.639206Z"},{"id":"GO-2024-2477","title":"OpenFGA denial of service in github.com/openfga/openfga","description":"OpenFGA denial of service in github.com/openfga/openfga","status":"published","published":"2024-06-28T15:28:53Z","modified":"2026-03-03T04:51:39.103274Z","updated_at":"2026-11-02T15:47:01.185262Z"}]}}