CVE-2026-6249 HIGH

CVE-2026-6249: Vvveb CMS 1.0.8.2 Remote Code Execution via Media Upload

Vendor Vvveb
Product Vvveb CMS
Weakness CWE-434 · Unrestricted file upload
Published April 20, 2026
Last update May 25, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 20, 2026 CVE published
May 25, 2026 Record updated