views/Index.php in the Install module in vTiger 6.0 before Security Patch 2 does not properly restrict access, which allows remote attackers to re-install the application via a request that sets the X-Requested-With HTTP header, as demonstrated by executing arbitrary PHP code via the db_name parameter.

SQL injection vulnerability in CalendarCommon.php in vTiger CRM 5.4.0 and possibly earlier allows remote authenticated users to execute arbitrary SQL commands via the onlyforuser parameter in an index action to index.php. NOTE: this issue might be a duplicate of CVE-2011-4559.

Multiple cross-site scripting (XSS) vulnerabilities in the customer portal in vtiger CRM before 5.2.0 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

SQL injection vulnerability in the Calendar module in vTiger CRM 5.2.1 and earlier allows remote attackers to execute arbitrary SQL commands via the onlyforuser parameter in an index action to index.php.

Incomplete blacklist vulnerability in config.template.php in vtiger CRM before 5.2.1 allows remote authenticated users to execute arbitrary code by using the draft save feature in the Compose Mail component to upload a file with a .phtml extension, and then accessing this file via a direct request to the file in the storage/ directory tree.

Multiple directory traversal vulnerabilities in the return_application_language function in include/utils/utils.php in vtiger CRM before 5.2.1 allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in (1) the lang_crm parameter to phprint.php or (2) the current_language parameter in an Accounts Import action to graph.php.

Multiple cross-site scripting (XSS) vulnerabilities in vtiger CRM before 5.2.1 allow remote attackers to inject arbitrary web script or HTML via (1) the username (aka default_user_name) field or (2) the password field in a Users Login action to index.php, or (3) the label parameter in a Settings GetFieldInfo action to index.php, related to modules/Settings/GetFieldInfo.php.

vtiger CRM before 5.1.0 allows remote authenticated users, with certain View privileges, to delete (1) attachments, (2) reports, (3) filters, (4) views, and (5) tickets; insert (6) attachments, (7) reports, (8) filters, (9) views, and (10) tickets; and edit (11) reports, (12) filters, (13) views, and (14) tickets via unspecified vectors.