{"id":"CVE-2021-41559","aliases":["BIT-silverstripe-2021-41559","GHSA-9fmg-89fx-r33w"],"url":"https://o3.security/vulnerability/CVE-2021-41559","summary":"Quadratic blowup in Convert::xml2array()","details":"Silverstripe silverstripe/framework 4.x until 4.10.9 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.","published":"2022-06-28T22:15:07.870Z","modified":"2026-10-24T10:50:42.875015122Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"silverstripe/framework","fixedVersion":"4.10.9"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/silverstripe/silverstripe-framework/releases"},{"type":"ADVISORY","url":"https://www.silverstripe.org/download/security-releases/"},{"type":"ADVISORY","url":"https://www.silverstripe.org/download/security-releases/cve-2021-41559"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41559"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/CVE-2021-41559.yaml"},{"type":"WEB","url":"https://www.silverstripe.org/download/security-releases"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:50:42.875015122Z"}}