Open Ticket Request System (OTRS) before 3.0.0-beta7 does not properly restrict the ticket ages that are within the scope of a search, which allows remote authenticated users to cause a denial of service (daemon hang) via a fulltext search.

The ACL-customer-status Ticket Type setting in Open Ticket Request System (OTRS) before 3.0.0-beta1 does not restrict the ticket options after an AJAX reload, which allows remote authenticated users to bypass intended ACL restrictions on the (1) Status, (2) Service, and (3) Queue via selections.

The (1) AgentInterface and (2) CustomerInterface components in Open Ticket Request System (OTRS) before 3.0.6 place cleartext credentials into the session data in the database, which makes it easier for context-dependent attackers to obtain sensitive information by reading the _UserLogin and _UserPW fields.

Cross-site scripting (XSS) vulnerability in AgentTicketZoom in OTRS 2.4.x before 2.4.9, when RichText is enabled, allows remote attackers to inject arbitrary web script or HTML via JavaScript in an HTML e-mail.

Open Ticket Request System (OTRS) 2.3.x before 2.3.6 and 2.4.x before 2.4.8 does not properly handle the matching of Perl regular expressions against HTML e-mail messages, which allows remote attackers to cause a denial of service (CPU consumption) via a large message, a different vulnerability than CVE-2010-2080.

Multiple cross-site scripting (XSS) vulnerabilities in Open Ticket Request System (OTRS) 2.3.x before 2.3.6 and 2.4.x before 2.4.8 allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.