CVE-2017-16854
In Open Ticket Request System (OTRS) through 3.3.20, 4 through 4.0.26, 5 through 5.0.24, and 6 through 6.0.1, an attacker who is logged in as a customer can use the ticket search form to disclose internal article information of their customer tickets.
Date published : 2017-12-08
https://www.otrs.com/security-advisory-2017-08-security-update-otrs-framework/