CVE-2026-65884

critical · 10

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.

CVSS

0.3%

EPSS (exploit prob.)

21st

EPSS percentile

2026-07-29

Published

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red

Weaknesses

CWE-284

Affected products

Vendor	Product	Affected versions
balbooa	gridbox	< 2.20.2

Check a specific version with /api/v1/cve/match.

References

https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/
https://www.balbooa.com/gridbox

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-65884