{"id":"CVE-2016-9838","aliases":["EUVD-2016-10638","GHSA-r7gw-fgrc-gxxj"],"status":"published","title":"An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5....","description":"An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.14099,"percentile":0.9659,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-284"],"published":"2016-12-16T09:02:00Z","modified":"2026-10-24T10:30:35Z","exploits":[{"source":"exploitdb","id":"EDB-41157","title":"Joomla! \u003c 3.6.4 - Admin Takeover","type":"webapps","platform":"php","date":"2017-01-20","url":"https://www.exploit-db.com/exploits/41157"},{"source":"pocgithub","id":"cved-sources/cve-2016-9838","title":"cved-sources/cve-2016-9838","date":"2019-03-27","url":"https://github.com/cved-sources/cve-2016-9838"}],"products":[{"vendor":"joomla","product":"joomla\\!"}],"references":[{"url":"https://www.joomla.org/announcements/release-news/5693-joomla-3-6-5-released.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"https://www.exploit-db.com/exploits/41157/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/94893","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9838"},{"url":"https://www.exploit-db.com/exploits/41157"},{"url":"https://github.com/advisories/GHSA-r7gw-fgrc-gxxj"}],"sources":{"cve":[{"id":"CVE-2016-9838","description":"An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.","status":"published","published":"2016-12-16T09:02:00Z","modified":"2024-08-06T02:59:03.556Z","updated_at":"2026-11-02T14:33:32.103757Z"}],"euvd":[{"id":"EUVD-2016-10638","description":"An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.","status":"published","published":"2016-12-16T09:02:00Z","modified":"2024-08-06T02:59:03Z","updated_at":"2026-11-03T02:22:26.376959Z"}],"ghsa":[{"id":"GHSA-r7gw-fgrc-gxxj","title":"An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5....","description":"An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.","status":"published","published":"2022-05-17T01:18:36Z","modified":"2025-04-12T13:08:36Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:01:30.991417Z"}],"nvd":[{"id":"CVE-2016-9838","description":"An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.","status":"published","published":"2016-12-16T09:59:00.327Z","modified":"2026-06-17T00:56:38.19Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:03:32.79141Z"}],"osv":[{"id":"CVE-2016-9838","description":"An issue was discovered in components/com_users/models/registration.php in Joomla! before 3.6.5. Incorrect filtering of registration form data stored to the session on a validation error enables a user to gain access to a registered user's account and reset the user's group mappings, username, and password, as demonstrated by submitting a form that targets the `registration.register` task.","status":"published","published":"2016-12-16T09:59:00.327Z","modified":"2026-10-24T10:30:35.698916507Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:03.472693Z"}]}}