{"id":"CVE-2023-28104","aliases":["GHSA-67g8-c724-8mp3"],"url":"https://o3.security/vulnerability/CVE-2023-28104","summary":"silverstripe/graphql Denial of Service vulnerability","details":"An attacker could use a specially crafted graphql query to execute a Distributed Denial of Service attack (DDOS attack) against a website. This mostly affects websites with publicly exposed and particularly large/complex graphql schemas.\n\nIf your Silverstripe CMS project does not expose a public facing graphql schema, a user account is required to trigger the DDOS attack. If your site is hosted behind a content delivery network (CDN), such as Imperva or CloudFlare, this will likely further mitigate the risk.\n\nUpgrade to `silverstripe/graphql` 4.2.3 or 4.1.2 or above to remedy the vulnerability.","published":"2023-03-16T15:25:30.551Z","modified":"2026-08-12T03:51:39.709238485Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"silverstripe/graphql","fixedVersion":"4.1.2"},{"ecosystem":"Packagist","name":"silverstripe/graphql","fixedVersion":"4.2.3"}],"fix":{"url":"https://github.com/silverstripe/silverstripe-graphql/pull/526","label":"silverstripe/silverstripe-graphql#526"},"references":[{"type":"WEB","url":"https://github.com/silverstripe/silverstripe-graphql/releases/tag/4.1.2"},{"type":"WEB","url":"https://github.com/silverstripe/silverstripe-graphql/releases/tag/4.2.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28104.json"},{"type":"ADVISORY","url":"https://github.com/silverstripe/silverstripe-graphql/security/advisories/GHSA-67g8-c724-8mp3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28104"},{"type":"FIX","url":"https://github.com/silverstripe/silverstripe-graphql/pull/526"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/graphql/CVE-2023-28104.yaml"},{"type":"PACKAGE","url":"https://github.com/silverstripe/silverstripe-graphql"},{"type":"WEB","url":"https://www.silverstripe.org/download/security-releases/CVE-2023-28104"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:39.709238485Z"}}