CVE-2026-65884 Joomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2
Unauthenticated attackers can register accounts with administrative permissions by manipulating usergroup IDs 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-2026-65884?
CVE-2026-65884 is a critical 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 - Privilege Escalation in Gridbox < 2.20.2 - The registration method allows users provided usergroup IDs, allowing unauthenticated actors to register new accounts with administrative permissions.
Weakness: CWE-284
Which versions are affected by CVE-2026-65884?
It affects 1 product.
Products include Balbooa Gridbox.
How do I fix CVE-2026-65884?
No fix has been published for CVE-2026-65884 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-65884 being exploited?
There is no known exploitation of CVE-2026-65884 in the wild and no public exploit code.
Other vulnerabilities in balbooa.com Gridbox extension for Joomla
- CVE-2026-65887 Joomla Extension - balbooa.com - Unauthenticated arbitrary password reset in Gridbox < 2.20.2
- CVE-2026-65888 Joomla Extension - balbooa.com - Account takeover vulnerability in Gridbox < 2.20.2
- CVE-2026-65885 Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2
- CVE-2026-65886 Joomla Extension - balbooa.com - Unauthenticated arbitrary file read in Gridbox < 2.20.2
- CVE-2026-65889 Joomla Extension - balbooa.com - Unauthenticated recursive directory deletion in Gridbox < 2.20.2
Sources
Also known as GHSA-5mfv-p7rj-5xgx.