{"id":"CVE-2026-65884","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-65884","summary":"Joomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2 - The registration method allows users provided usergroup IDs, allowing unauthenticated actors to register…","details":"Joomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2 - The registration method allows users provided usergroup IDs, allowing unauthenticated actors to register new accounts with administrative permissions.","published":"2026-07-29T13:19:10.677","modified":"2026-08-05T18:37:44.247","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.00284,"percentile":0.20998,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/"},{"type":"WEB","url":"https://www.balbooa.com/gridbox"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-05T18:37:44.247"}}