{"id":"CVE-2021-27903","aliases":["GHSA-x2j7-6hxm-87p3"],"url":"https://o3.security/vulnerability/CVE-2021-27903","summary":"Craft CMS Remote Code Injection","details":"An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution vulnerability existed on sites that did not restrict administrative changes (if an attacker were somehow able to hijack an administrator's session).","published":"2021-06-30T12:15:07.643Z","modified":"2026-08-07T15:15:24.755512Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"craftcms/cms","fixedVersion":"3.6.7"}],"fix":{"url":"https://github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38","label":"craftcms/cms@c17728f"},"references":[{"type":"ADVISORY","url":"https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#367---2021-02-23"},{"type":"ADVISORY","url":"https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#security"},{"type":"FIX","url":"https://github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T15:15:24.755512Z"}}