{"id":"CVE-2018-11796","aliases":["EUVD-2018-0614","GHSA-h8q5-g2cj-qr5h","UBUNTU-CVE-2018-11796"],"status":"published","title":"Apache Tika is vulnerable to entity expansions which can lead to a denial of service attack","description":"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.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.07537,"percentile":0.94547,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2018-10-09T22:00:00Z","modified":"2026-10-24T10:30:45Z","fixes":[{"ecosystem":"Maven","package":"org.apache.tika:tika-core","fixed_in":["1.19.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.tika:tika-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.1"},{"fixed":"1.19.1"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.tika:tika-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.1"},{"fixed":"1.19.1"}]}],"versions":["0.10","0.4","0.5","0.6","0.7","0.8","0.9","1.0","1.1","1.10","1.11","1.12","1.13","1.14","1.15","1.16","1.17","1.18","1.19","1.2","1.3","1.4","1.5","1.6","1.7","1.8","1.9"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"tika","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5-2","1.5-3","1.5-4","1.5-4ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"tika","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5-5"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"tika","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22-1","1.22-1ubuntu0.1~esm1","1.22-1ubuntu0.1~esm2","1.22-1ubuntu0.1~esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"tika","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22-2","1.22-2ubuntu0.22.04.1~esm1","1.22-2+deb11u1build0.22.04.1","1.22-2+deb11u1ubuntu0.1~esm1","1.22-2+deb11u1ubuntu0.1~esm2"]}],"products":[{"vendor":"apache","product":"tika"},{"vendor":"apache software foundation","product":"apache tika"}],"references":[{"url":"http://www.securityfocus.com/bid/105585","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory","web"]},{"url":"https://lists.apache.org/thread.html/88de8350cda9b184888ec294c813c5bd8a2081de8fd3666f8904bc05%40%3Cdev.tika.apache.org%3E","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://security.netapp.com/advisory/ntap-20190903-0002/","tags":["x_refsource_CONFIRM","x_transferred","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2019:3892","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-11796","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h8q5-g2cj-qr5h","tags":["advisory"]},{"url":"https://lists.apache.org/thread.html/88de8350cda9b184888ec294c813c5bd8a2081de8fd3666f8904bc05@%3Cdev.tika.apache.org%3E","tags":["web","report"]},{"url":"https://github.com/apache/tika","tags":["package"]},{"url":"https://security.netapp.com/advisory/ntap-20190903-0002","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2018-11796","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-11796","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-11796","description":"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.","status":"published","published":"2018-10-09T22:00:00Z","modified":"2024-09-16T18:19:51.122Z","updated_at":"2026-11-02T14:35:09.139955Z"}],"euvd":[{"id":"EUVD-2018-0614","description":"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.","status":"published","published":"2018-10-09T22:00:00Z","modified":"2024-09-16T18:19:51Z","updated_at":"2026-11-03T00:55:33.363823Z"}],"ghsa":[{"id":"GHSA-h8q5-g2cj-qr5h","title":"Apache Tika is vulnerable to entity expansions which can lead to a denial of service attack","description":"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.","status":"published","published":"2018-10-17T15:43:25Z","modified":"2023-01-09T05:03:03Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:36:04.396827Z"}],"nvd":[{"id":"CVE-2018-11796","description":"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.","status":"published","published":"2018-10-09T22:29:00.393Z","modified":"2026-06-17T01:36:36.9Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:04:44.873741Z"}],"osv":[{"id":"CVE-2018-11796","description":"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.","status":"published","published":"2018-10-09T22:29:00.393Z","modified":"2026-10-24T10:30:45.167540618Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:07.934182Z"},{"id":"GHSA-h8q5-g2cj-qr5h","title":"Apache Tika is vulnerable to entity expansions which can lead to a denial of service attack","description":"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.","status":"published","published":"2018-10-17T15:43:25Z","modified":"2024-02-16T08:07:07.926981Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T15:46:48.920784Z"},{"id":"UBUNTU-CVE-2018-11796","description":"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.","status":"published","published":"2018-10-09T22:29:00Z","modified":"2026-09-03T16:01:17.340218855Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:16.544091Z"}]}}