XML external entity (XXE) vulnerability in the SqlXmlUtil code in Apache Derby before 10.12.1.1, when a Java Security Manager is not in place, allows context-dependent attackers to read arbitrary files or cause a denial of service (resource consumption) via vectors involving XmlVTI and the XML datatype.
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.oracle.com/security-alerts/cpuapr2020.html
https://svn.apache.org/viewvc?view=revision&revision=1691461
https://issues.apache.org/jira/browse/DERBY-6807