CVE-2026-39918
CRITICAL
NVD
CVSS Score
9.8
Severity
CRITICAL
Published
Apr 20, 2026
Vendor
unknown
Description
Vvveb prior to 1.0.8.1 contains a code injection vulnerability in the installation endpoint where the subdir POST parameter is written unsanitized into the env.php configuration file without escaping or validation. Attackers can inject arbitrary PHP code by breaking out of the string context in the define statement to achieve unauthenticated remote code execution as the web server user.