CVE-2026-84048 File upload in JoomGallery extension for Joomla
Unauthenticated attackers can upload arbitrary files via the TUS endpoint, potentially leading to code execution on non-standard server configurations.
- 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-2026-84048?
CVE-2026-84048 is a medium-severity vulnerability in joomgalleryfriends.net JoomGallery extension for Joomla, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Joomla Extension - joomgalleryfriends.net - Unauthenticated arbitrary file upload via the TUS endpoint in JoomGallery < 4.4.2 - The TUS endpoint allows arbitrary file uploads, however neither file name nor file extension are under attacker control. Code execution requires non-standard server configuration.
Weakness: CWE-284
Which versions are affected by CVE-2026-84048?
How do I fix CVE-2026-84048?
No fix has been published for CVE-2026-84048 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-84048 being exploited?
There is no known exploitation of CVE-2026-84048 in the wild and no public exploit code.
Sources
Also known as GHSA-x2gj-69fv-g59f.