Cross-Site Scripting (XSS) vulnerability in adm/boardgroup_form_update.php and adm/boardgroup_list_update.php in gnuboard5 before 5.3.1.6 allows remote attackers to inject arbitrary web script or HTML.
Cross-Site Scripting (XSS) vulnerability in newwinform.php in GNUBOARD5 before 5.3.1.6 allows remote attackers to inject arbitrary web script or HTML via the popup title parameter.
Cross-Site Scripting (XSS) vulnerability in point_list.php in GNUBOARD5 before 5.3.1.6 allows remote attackers to inject arbitrary web script or HTML via the popup title parameter.
Multiple SQL injection vulnerabilities in bbs/ajax.autosave.php in GNUboard 5.x and possibly earlier allow remote authenticated users to execute arbitrary SQL commands via the (1) subject or (2) content parameter.
Cross-site scripting (XSS) vulnerability in the file_download function in GNUBoard before 4.34.21 allows remote attackers to inject arbitrary web script or HTML via the filename parameter.
The file extension check in GNUBoard 3.40 and earlier only verifies extensions that contain all lowercase letters, which allows remote attackers to upload arbitrary files via file extensions that include uppercase letters.