Unauthenticated File Read Vulnerability in Balbooa Gridbox by Joomla
CVE-2026-65886

9.2CRITICAL

Key Information:

Vendor

Balbooa.com

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

What is CVE-2026-65886?

The Balbooa Gridbox extension for Joomla exhibits an unauthenticated arbitrary file read vulnerability that affects versions prior to 2.20.2. This issue allows unauthorized users to access sensitive files hosted on the server without authentication, which may lead to the exposure of critical information and potential security breaches. Users of the affected version should promptly update to the latest release to mitigate risks.

Affected Version(s)

Gridbox extension for Joomla 1.0.0-2.20.1

References

https://www.balbooa.com/gridbox
product
https://mysites.guru/blog/gridbox-23-critical-vulnerabili...
third-party-advisory

CVSS V4

Score:
9.2
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Phil Taylor, mysites.guru
Pascal Lohmann
.