Cross site scripting (XSS) vulnerability in pages.edit_form.php in flatCore 1.4.6 allows remote attackers to inject arbitrary JavaScript via the PATH_INFO in an acp.php URL, due to use of unsanitized $_SERVER['PHP_SELF'] to generate URLs.
https://github.com/flatCore/flatCore-CMS/issues/34
https://github.com/flatCore/flatCore-CMS/commit/f1b42b338693a9c240182e76ef2131057f2c2a87