{"id":"CVE-2020-18657","details":"Cross Site Scripting (XSS) vulnerability in GetSimpleCMS \u003c= 3.3.15 in admin/changedata.php via the redirect_url parameter and the headers_sent function.","modified":"2026-04-10T04:23:59.937204Z","published":"2021-06-23T19:15:07.923Z","references":[{"type":"ADVISORY","url":"https://www.seebug.org/vuldb/ssvid-97929"},{"type":"ADVISORY","url":"https://github.com/LoRexxar/CVE_Request/blob/master/getsimplecms%20v3.3.15/getsimplecms_before_v3.3.15.md"},{"type":"EVIDENCE","url":"https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1310"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/getsimplecms/getsimplecms","events":[{"introduced":"0"},{"last_affected":"a26202bee203910780f5a96b3bc1f52a8f23d0a1"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"3.3.15"}]}}],"versions":["3.3.12","3.3.15","v3.1.1","v3.1.2","v3.2.1","v3.2.2","v3.3.14","v3.3.14b1","v3.3.14b2","v3.3.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-18657.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}