---
id: "CVE-2026-107129"
kind: "vulnerability"
aliases: ["CVE-2026-107129"]
title: "Joomla Gridbox extension: unauthenticated path traversal deletes arbitrary files"
severity: "high"
cvss: 8.3
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["gridbox", "joomla", "other", "php", "self-hosted"]
not_affected_if: ["gridbox-not-installed", "version-2.20.5.0-or-later"]
published_at: "2026-11-05T18:17:00+00:00"
first_seen_at: "2026-11-05T18:40:09+00:00"
updated_at: "2026-11-05T18:40:25+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107129", "first_seen_at": "2026-11-05T18:40:09+00:00"}]
exploit_sources: []
---

# Joomla Gridbox extension: unauthenticated path traversal deletes arbitrary files

Gridbox, a page builder extension for Joomla from balbooa.com, has a path traversal flaw that lets an unauthenticated visitor delete arbitrary files on the server. The sources do not describe code execution; the impact stated is arbitrary file deletion.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether the Gridbox extension is installed on the Joomla site in the Joomla administrator under Extensions > Manage.
- Note the installed Gridbox version and compare it with `2.20.5.0`.

## Fix

- Gridbox versions below `2.20.5.0` are affected; move to `2.20.5.0` or later.

## Timeline

- 2026-11-05T18:40:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-107129

## From the sources

Joomla Extension - balbooa.com - Unauthenticated arbitrary file deletion via path traversal in Gridbox < 2.20.5.0

---

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