---
id: "CVE-2026-102788"
kind: "vulnerability"
aliases: ["CVE-2026-102788"]
title: "Joomla Gridbox extension: unauthenticated SQL injection via store sort parameter"
severity: "critical"
cvss: 9.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["e-commerce", "gridbox", "joomla", "package", "php"]
not_affected_if: ["gridbox-updated", "no-store-pages"]
published_at: "2026-10-27T10:16:53+00:00"
first_seen_at: "2026-10-27T10:31:02+00:00"
updated_at: "2026-10-27T10:31:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102788", "first_seen_at": "2026-10-27T10:31:02+00:00"}]
---

# Joomla Gridbox extension: unauthenticated SQL injection via store sort parameter

Gridbox, a Joomla page-builder extension by balbooa.com, passes the sort-by URL parameter on store product list pages straight into an ORDER BY clause without an allowlist check. An unauthenticated remote attacker can inject SQL to read or change database contents.

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

## How to check

- Check the installed Gridbox version in the Joomla extensions manager and confirm whether it is below `2.20.4.2`
- Look for the Gridbox component on the site (`com_gridbox`) and whether store product list pages are published

## Fix

- Update Gridbox to `2.20.4.2` or later from balbooa.com
- Until updated, disable or unpublish the Gridbox store product list pages

## Timeline

- 2026-10-27T10:31:02+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-102788

## From the sources

Joomla Extension - balbooa.com - Unauthenticated SQL injection in Gridbox < 2.20.4.2 - On store product list pages, the value of the sort-by URL parameter is retrieved using a string filter and passed directly to GridboxHelper::getBlogPosts(). When the parameter does not match known sorting keys, it is prefixed with a table alias and inserted into the ORDER BY clause without checking against an allowlist

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_