# CVE-2026-65890: Joomla Extension - balbooa.com - Unauthenticated SQL injection in Gridbox < 2.20.2

> Unauthenticated attackers can inject SQL queries into the Gridbox extension for Joomla, potentially reading or modifying database contents.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Jul 2026
- **Updated:** 12 Aug 2026
- **Also known as:** GHSA-729v-8mm2-88pw

## What is CVE-2026-65890?

CVE-2026-65890 is a critical SQL injection vulnerability in balbooa.com Gridbox extension for Joomla, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Joomla Extension - balbooa.com - Unauthenticated SQL injection in Gridbox < 2.20.2 - Multiple SQLi vectors allow unauthenticated actors to inject SQL in queries.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-65890?

It affects 1 product.


Products: Balbooa Gridbox.

## How do I fix CVE-2026-65890?

No fix has been published for CVE-2026-65890 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-65890 being exploited?

There is no known exploitation of CVE-2026-65890 in the wild and no public exploit code.

## Other vulnerabilities in balbooa.com Gridbox extension for Joomla

- [CVE-2026-65884](https://insights.sbomify.com/CVE-2026-65884/): Joomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2 (critical 10.0)
- [CVE-2026-65887](https://insights.sbomify.com/CVE-2026-65887/): Joomla Extension - balbooa.com - Unauthenticated arbitrary password reset in Gridbox < 2.20.2 (critical 10.0)
- [CVE-2026-65888](https://insights.sbomify.com/CVE-2026-65888/): Joomla Extension - balbooa.com - Account takeover vulnerability in Gridbox < 2.20.2 (critical 10.0)
- [CVE-2026-65885](https://insights.sbomify.com/CVE-2026-65885/): Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2 (critical 9.4)
- [CVE-2026-65886](https://insights.sbomify.com/CVE-2026-65886/): Joomla Extension - balbooa.com - Unauthenticated arbitrary file read in Gridbox < 2.20.2 (critical 9.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-65890 and fix it if it is affected.

What it is: CVE-2026-65890 is a critical SQL injection vulnerability in balbooa.com Gridbox extension for Joomla, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-65890 in the wild and no public exploit code.

Affected product: balbooa.com Gridbox extension for Joomla. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-65890/ (Markdown: https://insights.sbomify.com/CVE-2026-65890/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-65890
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-65890
- OSV: https://osv.dev/vulnerability/CVE-2026-65890

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-65890/
Summaries are generated and may contain mistakes; the official description above is the record.