{"id":"CVE-2020-23839","details":"A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpage, allows remote attackers to execute JavaScript code in the client's browser and harvest login credentials after a client clicks a link, enters credentials, and submits the login form.","modified":"2026-04-10T04:24:50.751766Z","published":"2020-09-01T17:15:12.310Z","references":[{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/162016/GetSimple-CMS-3.3.16-Cross-Site-Scripting-Shell-Upload.html"},{"type":"ADVISORY","url":"https://github.com/boku7/CVE-2020-23839"},{"type":"ADVISORY","url":"https://www.exploit-db.com/exploits/49726"},{"type":"EVIDENCE","url":"https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1330"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/getsimplecms/getsimplecms","events":[{"introduced":"0"},{"last_affected":"e58b89e1efbd7e9cd3c9782c42d7f83ff0e74aad"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"3.3.16"}]}}],"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","v3.3.16","v3.3.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-23839.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"}]}