{"data":{"id":"CVE-2020-11891","cve_id":"CVE-2020-11891","title":"An issue was discovered in Joomla!","summary":"An issue was discovered in Joomla!","severity":"MEDIUM","cvss":{"score":5.3,"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"nvd"},"published_at":"2020-04-21T17:15:12.757000Z","modified_at":"2026-06-17T02:50:59.713000Z","withdrawn_at":null,"is_joomla":true,"is_joomla_core":true,"relevance":"certain","product":"Joomla CMS","extension":{"type":null,"name":null},"sources":["nvd"],"source_count":1,"url":"https://cve.oyer.fr/cve/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.","cwe":[],"affected":[{"package":null,"product":"joomla!","vendor":"joomla","ecosystem":null,"cpe":"cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*","version_start":"3.8.8","version_end":"3.9.17","version_end_inclusive":false,"fixed_version":"3.9.17","type":"core","source":"nvd"}],"references":[{"url":"https://developer.joomla.org/security-centre/809-20200401-core-incorrect-access-control-in-com-users-access-level-editing-function.html","title":"Vendor Advisory","source":"nvd"}],"source_records":[{"source":"nvd","external_id":"CVE-2020-11891","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-11891","severity":"MEDIUM","cvss_score":5.3,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cvss_version":"3.1","first_seen_at":"2026-09-26T09:34:20.981720Z","last_seen_at":"2026-09-26T09:34:20.981720Z"}],"history":[{"at":"2026-09-26T09:34:20.981720Z","event":"created","source":"nvd","detail":"Détectée via nvd"}]}}