{"id":"CVE-2020-15159","aliases":["GHSA-673x-f5wx-fxpw"],"url":"https://o3.security/vulnerability/CVE-2020-15159","summary":"Cross Site Scripting and RCE in baserCMS","details":"baserCMS 4.3.6 and earlier is affected by Cross Site Scripting (XSS) and Remote Code Execution (RCE). This may be executed by logging in as a system administrator and uploading an executable script file such as a PHP file.The affected components are ThemeFilesController.php and UploaderFilesController.php. This is fixed in version 4.3.7.","published":"2020-08-28T22:15:10.657Z","modified":"2026-07-09T01:07:02.391636Z","cvss":{"score":7.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"baserproject/basercms","fixedVersion":"4.3.7"}],"fix":{"url":"https://github.com/baserproject/basercms/commit/16a7b3cd09a0ca355474119c76897eac2034a66d","label":"baserproject/basercms@16a7b3c"},"references":[{"type":"ADVISORY","url":"https://basercms.net/security/20200827"},{"type":"FIX","url":"https://github.com/baserproject/basercms/commit/16a7b3cd09a0ca355474119c76897eac2034a66d"},{"type":"FIX","url":"https://github.com/baserproject/basercms/security/advisories/GHSA-673x-f5wx-fxpw"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T01:07:02.391636Z"}}