The forum module in NullLogic Groupware 1.2.7 allows remote authenticated users to cause a denial of service (application crash) by specifying (1) an empty string or (2) a non-numeric string when selecting a forum, related to the fmessagelist function.

Multiple stack-based buffer overflows in the pgsqlQuery function in NullLogic Groupware 1.2.7, when PostgreSQL is used, might allow remote attackers to execute arbitrary code via input to the (1) POP3, (2) SMTP, or (3) web component that triggers a long SQL query.

SQL injection vulnerability in the auth_checkpass function in the login page in NullLogic Groupware 1.2.7 allows remote attackers to execute arbitrary SQL commands via the username parameter.

The _bad_protocol_once function in phpgwapi/inc/class.kses.inc.php in KSES, as used in eGroupWare before 1.4.003, Moodle before 1.8.5, and other products, allows remote attackers to bypass HTML filtering and conduct cross-site scripting (XSS) attacks via a string containing crafted URL protocols.

Cross-site scripting (XSS) vulnerability in index.php in Enterprise Groupware System (EGS) 1.2.4 and earlier allows remote attackers to inject arbitrary web script or HTML via the module parameter.