OX App Suite 7.8.4 and earlier allows Directory Traversal.
seclists.org/fulldisclosure/2019/Jan/10
software.open-xchange.com/OX6/doc/Release_Notes_for_Patch_Release_4791_7.8.4_2018-06-25.pdf
software.open-xchange.com/OX6/doc/Release_Notes_for_Patch_Release_4790_7.8.3_2018-06-25.pdf
software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_4789_7.6.3_2018-06-25.pdf