{"id":"CVE-2020-18657","aliases":["EUVD-2020-10581","GHSA-3gp2-fxr9-ph7v"],"status":"published","title":"Cross Site Scripting (XSS) vulnerability in GetSimpleCMS \u003c= 3.3.15 in admin/changedata.php via...","description":"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.","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":0.01371,"percentile":0.72167,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-06-23T18:43:59Z","modified":"2026-10-20T10:52:03Z","products":[{"vendor":"get-simple","product":"getsimplecms"}],"references":[{"url":"https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1310","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/LoRexxar/CVE_Request/blob/master/getsimplecms%20v3.3.15/getsimplecms_before_v3.3.15.md","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://www.seebug.org/vuldb/ssvid-97929","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-18657"},{"url":"https://github.com/advisories/GHSA-3gp2-fxr9-ph7v"}],"sources":{"cve":[{"id":"CVE-2020-18657","description":"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.","status":"published","published":"2021-06-23T18:43:59Z","modified":"2024-08-04T14:00:49.26Z","updated_at":"2026-11-02T14:35:59.434367Z"}],"euvd":[{"id":"EUVD-2020-10581","description":"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.","status":"published","published":"2021-06-23T18:43:59Z","modified":"2024-08-04T14:00:49Z","updated_at":"2026-11-03T03:07:26.397496Z"}],"ghsa":[{"id":"GHSA-3gp2-fxr9-ph7v","title":"Cross Site Scripting (XSS) vulnerability in GetSimpleCMS \u003c= 3.3.15 in admin/changedata.php via...","description":"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.","status":"published","published":"2022-05-24T19:06:02Z","modified":"2023-01-29T05:07:05Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:09.170985Z"}],"nvd":[{"id":"CVE-2020-18657","description":"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.","status":"published","published":"2021-06-23T19:15:07.923Z","modified":"2026-06-17T02:59:22.68Z","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":"2026-11-02T14:06:44.292752Z"}],"osv":[{"id":"CVE-2020-18657","description":"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.","status":"published","published":"2021-06-23T19:15:07.923Z","modified":"2026-10-20T10:52:03.552314226Z","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":"2026-11-02T15:44:15.212689Z"}]}}