# CVE-2026-65886: Balbooa Gridbox for Joomla unauthenticated arbitrary file read in photo viewer

Source: https://junglewise.ai/threats/cve-2026-65886-balbooa-gridbox-for-joomla-unauthenticated-arbitrary-file-read-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-29. Updated: 2026-07-29  
License: CC BY 4.0 with a link back

CVE-2026-65886 · Severity: info · CVSS 9.2 · Published 2026-07-29

Gridbox, a popular drag-and-drop website builder for the Joomla content management system, contains a security flaw in its photo viewer component. This vulnerability allows an unauthorized person to view sensitive files on the web server without needing a username or password. An attacker could use this to access configuration files or other private data, potentially leading to a full site compromise or data breach.

Technologies: [Balbooa Gridbox](https://junglewise.ai/threats/technologies/gridbox). Vendors: [Balbooa](https://junglewise.ai/threats/vendors/balbooa).

## Quick answers

**Is CVE-2026-65886 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-65886 being exploited in the wild.

**How severe is CVE-2026-65886?** Informational severity, with a CVSS score of 9.2, published 29 July 2026.

**Which products and versions are affected?** Balbooa Gridbox 1.0.0-2.20.1.

**Is there a fix for CVE-2026-65886?** A patch was published on 2026-07-20: Initial partial fixes in version 2.20.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-65886 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-65886?** Check whether you run Balbooa Gridbox at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A path traversal vulnerability (CWE-22) exists in the photo viewer component of the Balbooa Gridbox extension for Joomla. The flaw allows an unauthenticated remote attacker to bypass directory restrictions and read arbitrary files on the server by providing manipulated file paths to the affected endpoint. This vulnerability is part of a larger set of 23 critical flaws identified in the extension. The issue is resolved in Gridbox version 2.20.2. Exploitation in the wild has been reported for vulnerabilities within this suite of findings.

## Affected products

- balbooa.com Gridbox extension for Joomla 1.0.0-2.20.1

## Timeline

- 2026-07-20: patched: Initial partial fixes in version 2.20.1
- 2026-07-29: advisory: Full disclosure of 23 vulnerabilities including this file read flaw
- 2026-07-29: patched: Final fixes released in version 2.20.2

## References

- [https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/](https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/)
- [https://www.balbooa.com/gridbox](https://www.balbooa.com/gridbox)

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