{"id":"CVE-2021-26036","aliases":["BIT-joomla-2021-26036","EUVD-2021-12859","GHSA-g983-3grj-v7qw"],"status":"published","title":"[20210702] - Core - DoS through usergroup table manipulation","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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01224,"percentile":0.69033,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2021-07-07T10:12:46Z","modified":"2026-10-24T10:30:15Z","affected":[{"source":"osv","ecosystem":"Bitnami","package":"joomla","ranges":[{"type":"SEMVER","events":[{"introduced":"2.5.0"},{"last_affected":"3.9.27"}]}]}],"products":[{"vendor":"joomla","product":"joomla\\!"},{"vendor":"joomla! project","product":"joomla! cms"}],"references":[{"url":"https://developer.joomla.org/security-centre/857-20210702-core-dos-through-usergroup-table-manipulation.html","tags":["x_refsource_MISC","vendor-advisory","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26036","tags":["web"]},{"url":"https://github.com/advisories/GHSA-g983-3grj-v7qw"}],"sources":{"cve":[{"id":"CVE-2021-26036","title":"[20210702] - Core - DoS through usergroup table manipulation","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.","status":"published","published":"2021-07-07T10:12:46.11Z","modified":"2026-02-25T05:05:08.998Z","updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-12859","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.","status":"published","published":"2021-07-07T10:12:46Z","modified":"2026-02-25T05:05:08Z","updated_at":"2026-11-02T19:48:29.551855Z"}],"ghsa":[{"id":"GHSA-g983-3grj-v7qw","title":"An issue was discovered in Joomla! 2.5.0 through 3.9.27. Missing validation of input could lead...","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.","status":"published","published":"2022-05-24T19:07:08Z","modified":"2023-01-30T05:00:38Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:46:14.926249Z"}],"nvd":[{"id":"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.","status":"published","published":"2021-07-07T11:15:08.637Z","modified":"2026-06-17T03:42:46.657Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:55.259633Z"}],"osv":[{"id":"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.","status":"published","published":"2021-07-07T11:15:08.637Z","modified":"2026-10-24T10:30:15.454364888Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:18.778776Z"},{"id":"BIT-joomla-2021-26036","title":"[20210702] - Core - DoS through usergroup table manipulation","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.","status":"published","published":"2025-04-03T14:13:37.395Z","modified":"2026-09-08T08:48:01.395860106Z","updated_at":"2026-11-02T15:28:31.782692Z"}]}}