Due to improper handling of uploaded images it is possible in very unlikely and rare conditions to force the agents browser to execute malicious javascript from a special crafted SVG file rendered as inline jpg file. This issue affects: ((OTRS)) Community Edition 5.0.x version 5.0.39 and prior versions; 6.0.x version 6.0.24 and prior versions. OTRS 7.0.x version 7.0.13 and prior versions.
https://otrs.com/release-notes/otrs-security-advisory-2020-02/
https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html
https://lists.debian.org/debian-lts-announce/2020/01/msg00027.html