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

Q: 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.

Q: Is CVE-2026-65890 being exploited?

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

Q: 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.

Critical 9.2 Published 29 Jul 2026 Updated 12 Aug 2026

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

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

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

Which versions are affected by CVE-2026-65890?

It affects 1 product.

Products include 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.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2026-65890 being exploited?

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

Sources

Also known as GHSA-729v-8mm2-88pw.