CVE-2026-105600: RCE in Joomla StageIt via Setting

CVE-2026-105600 is a remote code execution (RCE) vulnerability affecting the Joomla extension StageIt, developed by php-web-design.com. The flaw resides in the handling of setting strings, the configuration mechanism of the extension. Affected versions: 1.0-5.7.5 and 6.0-6.3.5. An attacker could send malicious input through configuration fields and achieve arbitrary code execution on the server.

The CVSS score is 8.6, rated as high severity. The vulnerability was publicly disclosed on November 2, 2026 — today — and is already mentioned on social media with alarm tone. No confirmed public exploit exists on open source repositories at the time of writing. A patch is not yet available according to collected signals: defenders do not have an official solution to deploy yet.

If your Joomla instance uses StageIt, immediately assess whether the extension is critical to your service. If not essential, consider disabling it now. Monitor php-web-design.com official channels for patch announcements. In the meantime, review access logs to Joomla configuration pages and StageIt for signs of exploitation attempts. Restrict backend access to known IP addresses.