CVE-2026-49049 Details.
JoomShaper Helix3 <=3.1.0 - Unauthenticated Arbitrary JSON File Write
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-49049. What It Means.
JoomShaper Helix3 template framework versions 1.0 through 3.1.0 for Joomla expose an unauthenticated AJAX handler (plg_ajax_helix3) accessible via the Joomla com_ajax component. The onAjaxHelix3() plugin method processes data[action]=save requests without any authentication check or CSRF token validation. Unauthenticated remote attackers can write arbitrary JSON content to server-side files. The layoutName parameter contains no path traversal validation, enabling write to an…
Affected Product. What Is Hit.
- Vendor
- ollyo
- Product
- Ollyo HELIX3
References. Where To Read More.
FAQ
Common Questions.
JoomShaper Helix3 <=3.1.0 - Unauthenticated Arbitrary JSON File Write. JoomShaper Helix3 template framework versions 1.0 through 3.1.0 for Joomla expose an unauthenticated AJAX handler (plg_ajax_helix3) accessible via the Joomla com_ajax component. The onAjaxHelix3() plugin method processes data[action]=save requests without any authentication check or CSRF token validation. Unauthenticated remote attackers can write arbitrary JSON content to server-side files. The layoutName parameter contains no path traversal validation, enabling write to an…
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-49049 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-49049 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Ollyo HELIX3 to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-49049. Atlas does not run a check for it, so nothing here says whether a particular site is affected.