{"id":"CVE-2020-11891","aliases":["BIT-joomla-2020-11891","EUVD-2020-4228","GHSA-4pgr-2c6g-3fhf"],"status":"published","title":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level...","description":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00795,"percentile":0.56726,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2020-04-21T16:40:04Z","modified":"2026-10-24T10:30:19Z","fixes":[{"ecosystem":"Bitnami","package":"joomla","fixed_in":["3.9.17"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"joomla","ranges":[{"type":"SEMVER","events":[{"introduced":"3.8.8"},{"fixed":"3.9.17"}]}]}],"products":[{"vendor":"joomla","product":"joomla\\!"}],"references":[{"url":"https://developer.joomla.org/security-centre/809-20200401-core-incorrect-access-control-in-com-users-access-level-editing-function.html","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-11891","tags":["web"]},{"url":"https://github.com/advisories/GHSA-4pgr-2c6g-3fhf"}],"sources":{"cve":[{"id":"CVE-2020-11891","description":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.","status":"published","published":"2020-04-21T16:40:04Z","modified":"2024-08-04T11:42:00.599Z","updated_at":"2026-11-02T14:35:57.67317Z"}],"euvd":[{"id":"EUVD-2020-4228","description":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.","status":"published","published":"2020-04-21T16:40:04Z","modified":"2024-08-04T11:42:00Z","updated_at":"2026-11-03T03:07:41.956166Z"}],"ghsa":[{"id":"GHSA-4pgr-2c6g-3fhf","title":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level...","description":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.","status":"published","published":"2022-05-24T17:15:55Z","modified":"2023-01-29T05:02:17Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:45:02.517815Z"}],"nvd":[{"id":"CVE-2020-11891","description":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.","status":"published","published":"2020-04-21T17:15:12.757Z","modified":"2026-06-17T02:50:59.713Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:05:59.718774Z"}],"osv":[{"id":"CVE-2020-11891","description":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.","status":"published","published":"2020-04-21T17:15:12.757Z","modified":"2026-10-24T10:30:19.812440066Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:14.034736Z"},{"id":"BIT-joomla-2020-11891","description":"An issue was discovered in Joomla! before 3.9.17. Incorrect ACL checks in the access level section of com_users allow the unauthorized editing of usergroups.","status":"published","published":"2025-04-03T14:10:00.912Z","modified":"2026-09-08T08:48:01.884613622Z","updated_at":"2026-11-02T15:28:31.782692Z"}]}}