Authenticated Arbitrary File Upload in Gridbox by Balbooa
CVE-2026-65885

9.4CRITICAL

Key Information:

Vendor

Balbooa.com

Status
Gridbox Extension For Joomla
Vendor
CVE Published:
29 July 2026

What is CVE-2026-65885?

The Gridbox extension by Balbooa contains a vulnerability that allows authenticated attackers to upload arbitrary files to the server. This flaw may lead to unauthorized actions and potential remote code execution when combined with other vulnerabilities, posing a significant risk to the integrity and security of the application.

Affected Version(s)

Gridbox extension for Joomla 1.0.0-2.20.1

References

https://www.balbooa.com/gridbox
product

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Phil Taylor
Pascal Lohmann
.