Unspecified vulnerability in Kernel/Modules/AdminPackageManager.pm in OTRS-Core in Open Ticket Request System (OTRS) 2.x before 2.4.11 and 3.x before 3.0.10 allows remote authenticated administrators to read arbitrary files via unknown vectors.

Cross-site scripting (XSS) vulnerability in the rich-text-editor component in Open Ticket Request System (OTRS) before 3.0.0-beta2 allows remote authenticated users to inject arbitrary web script or HTML by using the "source code" feature in the customer interface.

Open Ticket Request System (OTRS) before 2.4.4 grants ticket access on the basis of single-digit substrings of the CustomerID value, which allows remote authenticated users to bypass intended access restrictions in opportunistic circumstances by visiting a ticket, as demonstrated by leveraging the CustomerID 12 account to read tickets that should be available only to CustomerID 1 or CustomerID 2.

The customer-interface ticket-print dialog in Open Ticket Request System (OTRS) before 3.0.0-beta3 does not properly restrict customer-visible data, which allows remote authenticated users to obtain potentially sensitive information from the (1) responsible, (2) owner, (3) accounted time, (4) pending until, and (5) lock fields by reading this dialog.

Open Ticket Request System (OTRS) before 2.4.10, and 3.x before 3.0.3, does not present warnings about incoming encrypted e-mail messages that were based on revoked PGP or GPG keys, which makes it easier for remote attackers to spoof e-mail communication by leveraging a key that has a revocation signature.

Open Ticket Request System (OTRS) before 2.3.5 does not properly disable hidden permissions, which allows remote authenticated users to bypass intended queue access restrictions in opportunistic circumstances by visiting a ticket, related to a certain ordering of permission-set and permission-remove operations involving both hidden permissions and other permissions.

Open Ticket Request System (OTRS) before 3.0.0-beta6 adds email-notification-ext articles to tickets during processing of event-based notifications, which allows remote authenticated users to obtain potentially sensitive information by reading a ticket.

installer.pl in Open Ticket Request System (OTRS) before 3.0.3 has an Inbound Mail Password field that uses the text type, instead of the password type, for its INPUT element, which makes it easier for physically proximate attackers to obtain the password by reading the workstation screen.

The AgentTicketForward feature in Open Ticket Request System (OTRS) before 2.4.7 does not properly remove inline images from HTML e-mail messages, which allows remote attackers to obtain potentially sensitive image information in opportunistic circumstances by reading a forwarded message in a standard e-mail client.

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.