CVE-2026-49049 Joomla Extension - joomshaper.com - Unauthenticated access to Helix3 template ajax handler
Unauthenticated attackers can delete files, write JSON, and modify template parameters via an exposed ajax handler in the Helix3 Joomla 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-2026-49049?
CVE-2026-49049 is a high-severity missing authorization vulnerability in joomshaper.com Helix3 extension for Joomla, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Helix3 plugin for Joomla exposes an ajax handler task, that allows unauthenticated attackers to delete arbitrary files, write arbitrary JSON files and update template parameters.
Weakness: CWE-284
Which versions are affected by CVE-2026-49049?
It affects 1 product.
Products include Ollyo Helix3.
How do I fix CVE-2026-49049?
No fix has been published for CVE-2026-49049 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-49049 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49049 exists.
Public exploit code: 1 Nuclei template and 8 proofs of concept on GitHub.
Sources
Also known as GHSA-xr7r-292v-jxg8.