by Kastro
Paper/Archive/CVE-2026-65884

CVE-2026-65884

balbooa.com Gridbox extension for Joomla — Joomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2

EPSS 0.5%CVSS 10.0
critical.is priorityof 100
39
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 43.9.439 × 208.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Gridbox extension for Joomla1.0.0-2.20.1–CNA

Scores by source

Joomla (CNA)10.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refbalbooa.com/gridboxwriteupmysites.guru/blog/gridbox-23-critical-vulnerabilities