{"id":"CVE-2020-23839","aliases":["EUVD-2020-16577","GHSA-pp7f-4cfh-g7mw"],"status":"published","title":"A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index...","description":"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.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.10459,"percentile":0.95787,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-79"],"published":"2020-09-01T16:40:11Z","modified":"2026-10-20T10:49:38Z","exploits":[{"source":"exploitdb","id":"EDB-49726","title":"GetSimple CMS 3.3.16 - Persistent Cross-Site Scripting","type":"webapps","platform":"php","date":"2021-03-30","url":"https://www.exploit-db.com/exploits/49726"},{"source":"pocgithub","id":"boku7/CVE-2020-23839","title":"boku7/CVE-2020-23839","date":"2021-03-30","url":"https://github.com/boku7/CVE-2020-23839"}],"products":[{"vendor":"get-simple","product":"getsimple_cms"}],"references":[{"url":"https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1330","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"http://packetstormsecurity.com/files/162016/GetSimple-CMS-3.3.16-Cross-Site-Scripting-Shell-Upload.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://www.exploit-db.com/exploits/49726","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://github.com/boku7/CVE-2020-23839","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-23839"},{"url":"https://github.com/advisories/GHSA-pp7f-4cfh-g7mw"}],"sources":{"cve":[{"id":"CVE-2020-23839","description":"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.","status":"published","published":"2020-09-01T16:40:11Z","modified":"2024-08-04T15:05:11.396Z","updated_at":"2026-11-02T14:35:49.209579Z"}],"euvd":[{"id":"EUVD-2020-16577","description":"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.","status":"published","published":"2020-09-01T16:40:11Z","modified":"2024-08-04T15:05:11Z","updated_at":"2026-11-03T03:07:21.209139Z"}],"ghsa":[{"id":"GHSA-pp7f-4cfh-g7mw","title":"A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index...","description":"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.","status":"published","published":"2022-05-24T17:27:08Z","modified":"2023-01-29T05:02:21Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:45:03.903455Z"}],"nvd":[{"id":"CVE-2020-23839","description":"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.","status":"published","published":"2020-09-01T17:15:12.31Z","modified":"2026-06-17T03:05:00.4Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:13.600965Z"}],"osv":[{"id":"CVE-2020-23839","description":"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.","status":"published","published":"2020-09-01T17:15:12.31Z","modified":"2026-10-20T10:49:38.197149402Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:15.534837Z"}]}}