Zitat von Forum am 5. September 2022, 00:00 Uhr

An attacker who is logged into OTRS as an admin user may manipulate the URL to cause execution of JavaScript in the context of OTRS.

References
https://otrs.com/release-notes/otrs-security-advisory-2022-10/

An attacker who is logged into OTRS as an admin user may manipulate customer URL field to store JavaScript code to be run later by any other agent when clicking the customer URL link. Then the stored JavaScript is executed in the context of OTRS. The same issue applies for the usage of external data sources e.g. database or ldap

References
https://otrs.com/release-notes/otrs-security-advisory-2022-11/