Multiple SQL injection vulnerabilities in Acidcat CMS 3.4.1 allow remote attackers to execute arbitrary SQL commands via the (1) cID parameter to default.asp and the (2) username parameter to main_login2.asp.

Cross-site scripting (XSS) vulnerability in admin_colors_swatch.asp in Acidcat CMS 3.4.1 allows remote attackers to inject arbitrary web script or HTML via the field parameter.

Acidcat CMS 3.4.1 does not properly restrict access to (1) default_mail_aspemail.asp, (2) default_mail_cdosys.asp or (3) default_mail_jmail.asp, which allows remote attackers to bypass restrictions and relay email messages with modified From, FromName, and To fields.

Acidcat CMS 3.4.1 does not restrict access to the FCKEditor component, which allows remote attackers to upload arbitrary files.

Acidcat CMS 3.5.x does not prevent access to install.asp after installation finishes, which might allow remote attackers to restart the installation process and have unspecified other impact via requests to install.asp and other install_*.asp scripts. NOTE: the final installation screen states "Important: you must now delete all files beginning with 'install' from the root directory."

Acidcat CMS 3.5.3 and earlier stores sensitive information under the web root with insufficient access control, which allows remote attackers to download a database containing credentials via a direct request for databases/acidcat_3.mdb.

Multiple cross-site scripting (XSS) vulnerabilities in Acidcat CMS 3.5.1, 3.5.2, 3.5.6, and possibly earlier allow remote attackers to inject arbitrary web script or HTML via the PATH_INFO to (1) admin_colors.asp, (2) admin_config.asp, and (3) admin_cat_add.asp in admin/.