CVE-2026-74803 Joomla Extension - yootheme.com - Unauthenticated arbitrary file upload in Zoo < 4.1.64
Unauthenticated attackers can upload arbitrary files via the image element, potentially leading to remote code execution on Joomla sites using the Zoo extension.
- 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-2026-74803?
CVE-2026-74803 is a critical vulnerability in yootheme.com Zoo extension for Joomla, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Joomla Extension - yootheme.com - Unauthenticated arbitrary file upload in Zoo < 4.1.64 - The image element accepts arbitrary files when the client-supplied Content-Type falls within the image MIME group.
Weakness: CWE-434
Which versions are affected by CVE-2026-74803?
How do I fix CVE-2026-74803?
No fix has been published for CVE-2026-74803 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-74803 being exploited?
There is no known exploitation of CVE-2026-74803 in the wild and no public exploit code.
Sources
Also known as GHSA-c2jh-c375-pjcv.