{"data":{"id":"CVE-2021-26036","cve_id":"CVE-2021-26036","title":"An issue was discovered in Joomla!","summary":"An issue was discovered in Joomla!","severity":"HIGH","cvss":{"score":7.5,"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"nvd"},"published_at":"2021-07-07T00:00:00Z","modified_at":"2026-06-17T03:42:46.657000Z","withdrawn_at":null,"is_joomla":true,"is_joomla_core":true,"relevance":"certain","product":"Joomla CMS","extension":{"type":null,"name":null},"sources":["certfr","nvd"],"source_count":2,"url":"https://cve.oyer.fr/cve/CVE-2021-26036","description":"An issue was discovered in Joomla! 2.5.0 through 3.9.27. Missing validation of input could lead to a broken usergroups table.","cwe":["CWE-20"],"affected":[{"package":null,"product":"Joomla!","vendor":"Joomla!","ecosystem":null,"cpe":null,"version_start":null,"version_end":null,"version_end_inclusive":false,"fixed_version":null,"type":"core","source":"certfr"},{"package":null,"product":"Joomla! CMS","vendor":"Joomla! Project","ecosystem":null,"cpe":null,"version_start":"2.5.0","version_end":"3.9.27","version_end_inclusive":true,"fixed_version":null,"type":null,"source":"nvd"},{"package":null,"product":"joomla!","vendor":"joomla","ecosystem":null,"cpe":"cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*","version_start":"2.5.0","version_end":"3.9.27","version_end_inclusive":true,"fixed_version":null,"type":"core","source":"nvd"}],"references":[{"url":"https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-504/","title":"CERT-FR","source":"certfr"},{"url":"https://developer.joomla.org/security-centre/857-20210702-core-dos-through-usergroup-table-manipulation.html","title":"Vendor Advisory","source":"nvd"}],"source_records":[{"source":"certfr","external_id":"CERTFR-2021-AVI-504:CVE-2021-26036","url":"https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-504/","severity":null,"cvss_score":null,"cvss_vector":null,"cvss_version":null,"first_seen_at":"2026-09-26T09:28:00.962544Z","last_seen_at":"2026-09-26T09:28:00.962544Z"},{"source":"nvd","external_id":"CVE-2021-26036","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26036","severity":"HIGH","cvss_score":7.5,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_version":"3.1","first_seen_at":"2026-09-26T09:34:22.475682Z","last_seen_at":"2026-09-26T09:34:22.475682Z"}],"history":[{"at":"2026-09-26T09:34:22.475682Z","event":"source_added","source":"nvd","detail":"Source ajoutée : nvd"},{"at":"2026-09-26T09:28:00.962544Z","event":"created","source":"certfr","detail":"Détectée via certfr"}]}}