CVE-2026-65886 Joomla Extension - balbooa.com - Unauthenticated arbitrary file read in Gridbox < 2.20.2

Q: What is CVE-2026-65886?

CVE-2026-65886 is a critical path traversal 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-2026-65886 being exploited?

There is no known exploitation of CVE-2026-65886 in the wild and no public exploit code.

Q: How do I fix CVE-2026-65886?

No fix has been published for CVE-2026-65886 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 read arbitrary files via the photo viewer in the Gridbox extension for Joomla.

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-2026-65886?

CVE-2026-65886 is a critical path traversal 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 arbitrary file read in Gridbox < 2.20.2 - The photo viewer allows unauthenticated attackers to view arbitrary files.

Weakness: CWE-22

Which versions are affected by CVE-2026-65886?

It affects 1 product.

Products include Balbooa Gridbox.

How do I fix CVE-2026-65886?

No fix has been published for CVE-2026-65886 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-65886 being exploited?

There is no known exploitation of CVE-2026-65886 in the wild and no public exploit code.

Sources

Also known as GHSA-jc3g-m4mj-mm5m.