CVE-2023-5421: Otrs

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

An attacker who is logged into OTRS as an user with privileges to create and change customer user data may manipulate the CustomerID field to execute JavaScript code that runs immediatly after the data is saved.The issue onlyoccurs if the configuration for AdminCustomerUser::UseAutoComplete was changed before. This issue affects OTRS: from 7.0.X before 7.0.47, from 8.0.X before 8.0.37; ((OTRS)) Community Edition: from 6.0.X through 6.0.34.

Affected products

• Otrs Otrs: from 6.0.0, up to and including 6.0.34; from 7.0.0, before 7.0.47 (fixed in 7.0.47); from 8.0.0, before 8.0.37 (fixed in 8.0.37)

Published 2023-10-16. Last modified 2026-06-17.