An issue was discovered in concrete5 <= 5.6.3.4. The vulnerability exists due to insufficient filtration of user-supplied data (fID) passed to the "concrete5-legacy-master/web/concrete/tools/files/selectordata.php" URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.

An issue was discovered in concrete5 <= 5.6.3.4. The vulnerability exists due to insufficient filtration of user-supplied data (disablechoose) passed to the "concrete5-legacy-master/web/concrete/tools/files/searchdialog.php" URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.

concrete5 before 5.6.3 allows remote attackers to obtain the installation path via a direct request to (1) system/basics/editor.php, (2) system/view.php, (3) system/environment/filestoragelocations.php, (4) system/mail/importers.php, (5) system/mail/method.php, (6) system/permissions/filetypes.php, (7) system/permissions/files.php, (8) system/permissions/tasks.php, (9) system/permissions/users.php, (10) system/seo/view.php, (11) view.php, (12) users/attributes.php, (13) scrapbook/view.php, (14) pages/attributes.php, (15) files/attributes.php, or (16) files/search.php in singlepages/dashboard/.

Cross-site scripting (XSS) vulnerability in concrete5 Japanese 5.5.1 through 5.5.2.1 and concrete5 English 5.5.0 through 5.6.0.2 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in singlepages\downloadfile.php in concrete5 before 5.6.3 allows remote attackers to inject arbitrary web script or HTML via the HTTP Referer header to index.php/downloadfile.

Multiple cross-site scripting (XSS) vulnerabilities in concrete5 5.7.2.1, 5.7.2, and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) gName parameter in singlepages/dashboard/users/groups/bulkupdate.php or (2) instanceid parameter in tools/dashboard/sitemapdragrequest.php.