CVE-2026-102784 Joomla Extension - balbooa.com - CSRF in language installation feature Gridbox < 2.20.4.0
Attackers can force privileged users to install malicious language files via CSRF in the Gridbox Joomla extension.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-102784?
CVE-2026-102784 is a high-severity vulnerability in balbooa.com Gridbox extension for Joomla, published on 8 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Joomla Extension - balbooa.com - CSRF in language installation feature Gridbox < 2.20.4.0 - PagesController uses a trait that validates the Joomla session token only when the HTTP method is POST. addLanguage does not require POST inside the action and reads url and zip through the generic request input. A GET request can therefore reach the action without the trait checking a token. The action still requires core.tools , but that is the victim’s permission check; it does not prove that the privileged user intended the request.
Weakness: CWE-352
Which versions are affected by CVE-2026-102784?
How do I fix CVE-2026-102784?
No fix has been published for CVE-2026-102784 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-102784 being exploited?
There is no known exploitation of CVE-2026-102784 in the wild and no public exploit code.
Sources
Also known as GHSA-j9q5-m57g-9vj5.