What is CVE-2026-105600 and how does it work?

CVE-2026-105600 is a critical security vulnerability affecting the StageIt extension for Joomla developed by php-web-design.com, carrying a CVSS score of 8.6 according to the Rust zip library vulnerability analysis contexts and standard metrics.

The security flaw stems from an improper control of generation of code, formally categorized under CWE-94, which enables malicious actors to achieve remote code execution through manipulated setting strings.

Which Joomla extensions and versions are affected?

This vulnerability specifically targets multiple versions of the StageIt extension, exposing numerous web applications to severe takeover risks.

The affected product versions include 1.0 up to 5.7.5, and the 6.0 branch up to version 6.3.5, requiring urgent administrative attention as detailed on the Kaniko credential issue tracking pages.

How can I protect my Joomla site from this flaw?

Mitigating this remote code execution risk requires immediate action from webmasters and security teams managing vulnerable Joomla instances.

Follow these steps to secure your environment against potential exploitation:

  1. Identify if the StageIt extension is installed by checking your Joomla extension manager.
  2. Verify if your installed version falls within the vulnerable ranges of 1.0-5.7.5 or 6.0-6.3.5.
  3. Visit the LobeHub Chat flaw reference guidelines or check the official vendor changelog at https://www.php-web-design.com/Information/stageit-6-changelog.html for patches.
  4. Apply the latest available update or temporary workaround provided by php-web-design.com.