CVE-2010-4767: Otrs

Medium severity, CVSS 5.0. EPSS: 1.7% chance of exploitation in the next 30 days.

Open Ticket Request System (OTRS) before 2.3.6 does not properly handle e-mail messages in which the From line contains UTF-8 characters associated with diacritical marks and an invalid charset, which allows remote attackers to cause a denial of service (duplicate tickets and duplicate auto-responses) by sending a crafted message to a POP3 mailbox.

Affected products

• Otrs Otrs: up to and including 2.3.5; 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.