When chained with the LDN Path Traversal Attack identified in "GHSA-9qm4-rh6w-pq5x" (https://github.com/DSpace/DSpace/security/advisories/GHSA-9qm4-rh6w-pq5x), it may be possible to execute Java directly from Velocity templates using reflection. This is a very high impact vulnerability, but the attack can only be performed by a user that has DSpace Administrator privileges. Disabling LDN (see below) removes all known attack paths. Velocity is also used for email templating, but there is no known attack path via emails templates. Nonetheless, the patches below also apply to email templates.