CVE-2026-65886

Received Received - Intake

Unauthenticated File Read in Gridbox Joomla Extension

Publication date: 2026-07-29

Last updated on: 2026-07-29

Assigner: Joomla! Project

Description

Joomla Extension - balbooa.com - Unauthenticated arbitrary file read in Gridbox < 2.20.2 - The photo viewer allows unauthenticated attackers to view arbitrary files.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-29

Last Modified

2026-07-29

Generated

2026-07-30

AI Q&A

2026-07-30

EPSS Evaluated

N/A

NVD

CVE-2026-65886

Affected Vendors & Products

Vendor	Product	Version / Range
balbooa	gridbox	to 2.20.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

This vulnerability is an unauthenticated arbitrary file read flaw in the Joomla extension Gridbox versions before 2.20.2. It allows attackers to view arbitrary files on the server without authentication.

Detection Guidance

To detect this vulnerability, check if you are running Gridbox versions prior to 2.20.2. Inspect your Joomla extensions for the presence of the vulnerable photo viewer component. No specific commands are provided in the context.

Impact Analysis

Attackers could exploit this to read sensitive files on the server, potentially exposing confidential data like configuration files, user credentials, or other sensitive information.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating compliance requirements such as GDPR or HIPAA, which mandate strict data protection measures.

Mitigation Strategies

Immediately update Gridbox to version 2.20.2 or later to patch the unauthenticated arbitrary file read vulnerability. Remove or disable the vulnerable photo viewer component if updating is not possible.

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