{"id":"CVE-2017-12620","aliases":["GHSA-h22x-hm8g-rxpg"],"url":"https://o3.security/vulnerability/CVE-2017-12620","summary":"Improper Restriction of XML External Entity Reference in Apache OpenNLP","details":"When loading models or dictionaries that contain XML it is possible to perform an XXE attack, since Apache OpenNLP is a library, this only affects applications that load models or dictionaries from untrusted sources. The versions 1.5.0 to 1.5.3, 1.6.0, 1.7.0 to 1.7.2, 1.8.0 to 1.8.1 of Apache OpenNLP are affected.","published":"2017-10-03T01:29:01.233Z","modified":"2026-07-16T10:14:27.888764970Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.opennlp:opennlp-tools","fixedVersion":"1.8.2"}],"fix":null,"references":[{"type":"EVIDENCE","url":"http://opennlp.apache.org/news/cve-2017-12620.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-16T10:14:27.888764970Z"}}