CVE-2009-5055: Otrs

Low severity, CVSS 3.5. EPSS: 0.9% chance of exploitation in the next 30 days.

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.

Affected products

• Otrs Otrs: up to and including 2.4.3; version 0.5 only; version 1.0 only; version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; …

Published 2011-03-18. Last modified 2026-06-16.