In REDAXO before 5.6.3, a critical SQL injection vulnerability has been discovered in the rex_list class because of the prepareQuery function in core/lib/list.php, via the index.php?page=users/users sort parameter. Endangered was the backend and the frontend only if rex_list were used.
Cross-site scripting (XSS) vulnerability in include/classes/class.rex_list.inc.php in REDAXO 4.3.x and 4.4 allows remote attackers to inject arbitrary web script or HTML via the subpage parameter to index.php.
PHP remote file inclusion vulnerability in Redaxo 2.7.4 allows remote attackers to execute arbitrary PHP code via a URL in the (1) REX[INCLUDE_PATH] parameter in (a) addons/import_export/pages/index.inc.php and (b) pages/community.inc.php.
Multiple PHP remote file inclusion vulnerabilities in Redaxo 3.0 allow remote attackers to execute arbitrary PHP code via a URL in the REX[INCLUDE_PATH] parameter to (1) simple_user/pages/index.inc.php and (2) stats/pages/index.inc.php.
PHP remote file inclusion vulnerability in Redaxo 3.0 up to 3.2 allows remote attackers to execute arbitrary PHP code via a URL in the REX[INCLUDE_PATH] parameter to image_resize/pages/index.inc.php.