CVE-2026-65884

CRITICAL CVSS 4.0: 10.0 EPSS 0.28%
Updated Aug 05, 2026
Joomla
Parameter Value
CVSS 10.0 (CRITICAL)
Affected Versions before 2.20.2
Fixed In 2.20.2
Type CWE-284 (Improper Access Control)
Vendor Joomla
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Balbooa Gridbox
cpe:2.3:a:balbooa:gridbox:*:*:*:*:*:joomla\!:*:*
2.20.2