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.
{
"nvd_published_at": null,
"severity": "HIGH",
"github_reviewed": true,
"cwe_ids": [
"CWE-611"
],
"github_reviewed_at": "2020-06-16T21:39:33Z"
}