CVE-2026-6249: Vvveb CMS

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Vvveb CMS 1.0.8.2 contains a remote code execution vulnerability in its media upload handler that allows authenticated attackers to execute arbitrary operating system commands by uploading a PHP webshell with a .phtml extension. Attackers can bypass the extension deny-list and upload malicious files to the publicly accessible media directory, then request the file over HTTP to achieve full server compromise.

Affected products

• Vvveb Vvveb CMS: version 1.0.8.2 only

Published 2026-04-20. Last modified 2026-06-17.