{"id":"CVE-2018-11764","aliases":["GHSA-4fh8-pm7g-pmxq"],"url":"https://o3.security/vulnerability/CVE-2018-11764","summary":"Authentication bypass in Apache Hadoop","details":"Web endpoint authentication check is broken in Apache Hadoop 3.0.0-alpha4, 3.0.0-beta1, and 3.0.0. Authenticated users may impersonate any user even if no proxy user is configured.","published":"2020-10-21T19:15:13.543Z","modified":"2026-07-08T17:14:54.884416Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.hadoop:hadoop-main","fixedVersion":"3.0.1"},{"ecosystem":"Maven","name":"org.apache.hadoop:hadoop-main","fixedVersion":"3.0.1"},{"ecosystem":"Maven","name":"org.apache.hadoop:hadoop-main","fixedVersion":"3.0.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/r790ad0a049cde713b93589ecfd4dd2766fda0fc6807eedb6cf69f5c1%40%3Cgeneral.hadoop.apache.org%3E"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20201103-0003/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T17:14:54.884416Z"}}