{"id":"CVE-2018-11765","aliases":["EUVD-2021-0868","GHSA-rhh9-cm65-3w54"],"status":"published","title":"Improper Authentication in Apache Hadoop","description":"In Apache Hadoop versions 3.0.0-alpha2 to 3.0.0, 2.9.0 to 2.9.2, 2.8.0 to 2.8.5, any users can access some servlets without authentication when Kerberos authentication is enabled and SPNEGO through HTTP is not enabled.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.05207,"percentile":0.92542,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2020-09-30T17:02:20Z","modified":"2026-10-24T10:30:56Z","fixes":[{"ecosystem":"Maven","package":"org.apache.hadoop:hadoop-main","fixed_in":["3.0.1","2.9.3","2.8.6"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.hadoop:hadoop-main","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0-alpha2"},{"last_affected":"3.0.0"},{"fixed":"3.0.1"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.hadoop:hadoop-main","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.9.0"},{"last_affected":"2.9.2"},{"fixed":"2.9.3"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.hadoop:hadoop-main","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.8.0"},{"last_affected":"2.8.5"},{"fixed":"2.8.6"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.hadoop:hadoop-main","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0-alpha2"},{"fixed":"3.0.1"}]}],"versions":["3.0.0","3.0.0-alpha2","3.0.0-alpha3","3.0.0-alpha4","3.0.0-beta1"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.hadoop:hadoop-main","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.9.0"},{"fixed":"2.9.3"}]}],"versions":["2.9.0","2.9.1","2.9.2"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.hadoop:hadoop-main","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.8.0"},{"fixed":"2.8.6"}]}],"versions":["2.8.0","2.8.1","2.8.2","2.8.3","2.8.4","2.8.5"]}],"products":[{"vendor":"apache","product":"hadoop"},{"vendor":"apache software foundation","product":"apache hadoop"}],"references":[{"url":"https://lists.apache.org/thread.html/r2c7f899911a04164ed1707083fcd4135f8427e04778c87d83509b0da%40%3Cgeneral.hadoop.apache.org%3E","tags":["x_refsource_MISC","x_transferred","Mailing List","Vendor Advisory","advisory","web"]},{"url":"https://lists.apache.org/thread.html/rf9dfa8b77585c9227db9637552eebb2ab029255a0db4eb76c2b6c4cf%40%3Cdev.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/rbe25cac0f499374f8ae17a4a44a8404927b56de28d4c41940d82b7a4%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/r4dddf1705dbedfa94392913b2dad1cd2d1d89040facd389eea0b3510%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/r79b15c5b66c6df175d01d7560adf0cd5c369129b9a161905e0339927%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/reea5eb8622afbfbfca46bc758f79db83d90a3263a906c4d1acba4971%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/rb21df54a4e39732ce653d2aa5672e36a792b59eb6717f2a06bb8d02a%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/r46447f38ea8c89421614e9efd7de5e656186d35e10fc97cf88477a01%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/r17d94d132b207dad221595fd8b8b18628f5f5ec7e3f5be939ecd8928%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/rb241464d83baa3749b08cd3dabc8dba70a9a9027edcef3b5d4c24ef4%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/r74825601e93582167eb7cdc2f764c74c9c6d8006fa90018562fda60f%40%3Ccommits.druid.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://security.netapp.com/advisory/ntap-20201016-0005/","tags":["x_refsource_CONFIRM","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-11765","tags":["advisory"]},{"url":"https://lists.apache.org/thread.html/r17d94d132b207dad221595fd8b8b18628f5f5ec7e3f5be939ecd8928@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/r46447f38ea8c89421614e9efd7de5e656186d35e10fc97cf88477a01@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/r4dddf1705dbedfa94392913b2dad1cd2d1d89040facd389eea0b3510@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/r74825601e93582167eb7cdc2f764c74c9c6d8006fa90018562fda60f@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/r79b15c5b66c6df175d01d7560adf0cd5c369129b9a161905e0339927@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/rb21df54a4e39732ce653d2aa5672e36a792b59eb6717f2a06bb8d02a@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/rb241464d83baa3749b08cd3dabc8dba70a9a9027edcef3b5d4c24ef4@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/rbe25cac0f499374f8ae17a4a44a8404927b56de28d4c41940d82b7a4@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/reea5eb8622afbfbfca46bc758f79db83d90a3263a906c4d1acba4971@%3Ccommits.druid.apache.org%3E","tags":["web"]},{"url":"https://lists.apache.org/thread.html/rf9dfa8b77585c9227db9637552eebb2ab029255a0db4eb76c2b6c4cf@%3Cdev.druid.apache.org%3E","tags":["web"]},{"url":"https://github.com/advisories/GHSA-rhh9-cm65-3w54"},{"url":"https://security.netapp.com/advisory/ntap-20201016-0005","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-11765","description":"In Apache Hadoop versions 3.0.0-alpha2 to 3.0.0, 2.9.0 to 2.9.2, 2.8.0 to 2.8.5, any users can access some servlets without authentication when Kerberos authentication is enabled and SPNEGO through HTTP is not enabled.","status":"published","published":"2020-09-30T17:02:20Z","modified":"2024-08-05T08:17:09.112Z","updated_at":"2026-11-02T14:35:09.570381Z"}],"euvd":[{"id":"EUVD-2021-0868","description":"In Apache Hadoop versions 3.0.0-alpha2 to 3.0.0, 2.9.0 to 2.9.2, 2.8.0 to 2.8.5, any users can access some servlets without authentication when Kerberos authentication is enabled and SPNEGO through HTTP is not enabled.","status":"published","published":"2020-09-30T17:02:20Z","modified":"2024-08-05T08:17:09Z","updated_at":"2026-11-03T02:39:54.130594Z"}],"ghsa":[{"id":"GHSA-rhh9-cm65-3w54","title":"Improper Authentication in Apache Hadoop","description":"In Apache Hadoop versions 3.0.0-alpha2 to 3.0.0, 2.9.0 to 2.9.2, 2.8.0 to 2.8.5, any users can access some servlets without authentication when Kerberos authentication is enabled and SPNEGO through HTTP is not enabled.","status":"published","published":"2021-04-30T17:29:30Z","modified":"2023-02-01T05:05:27Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:36:34.260786Z"}],"nvd":[{"id":"CVE-2018-11765","description":"In Apache Hadoop versions 3.0.0-alpha2 to 3.0.0, 2.9.0 to 2.9.2, 2.8.0 to 2.8.5, any users can access some servlets without authentication when Kerberos authentication is enabled and SPNEGO through HTTP is not enabled.","status":"published","published":"2020-09-30T18:15:15.477Z","modified":"2026-06-17T01:36:32.583Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:05:00.03074Z"}],"osv":[{"id":"CVE-2018-11765","description":"In Apache Hadoop versions 3.0.0-alpha2 to 3.0.0, 2.9.0 to 2.9.2, 2.8.0 to 2.8.5, any users can access some servlets without authentication when Kerberos authentication is enabled and SPNEGO through HTTP is not enabled.","status":"published","published":"2020-09-30T18:15:15.477Z","modified":"2026-10-24T10:30:56.537423085Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:07.934182Z"},{"id":"GHSA-rhh9-cm65-3w54","title":"Improper Authentication in Apache Hadoop","description":"In Apache Hadoop versions 3.0.0-alpha2 to 3.0.0, 2.9.0 to 2.9.2, 2.8.0 to 2.8.5, any users can access some servlets without authentication when Kerberos authentication is enabled and SPNEGO through HTTP is not enabled.","status":"published","published":"2021-04-30T17:29:30Z","modified":"2024-02-17T05:34:33.603105Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:46:55.877614Z"}]}}