In Apache Tika 1.19 (CVE-2018-11761) we added an entity expansion limit for XML parsing. However Tika reuses SAXParsers and calls reset() after each parse which for Xerces2 parsers as per the documentation removes the user-specified SecurityManager and thus removes entity expansion limits after the first parse. Apache Tika versions from 0.1 to 1.19 are therefore still vulnerable to entity expansions which can lead to a denial of service attack. Users should upgrade to 1.19.1 or later.