CVE-2026-39918

CriticalCVSS 9.8/10Last modified Jul 14, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Apr 20, 2026
Last modified
Jul 14, 2026
NVD status
Deferred

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CVE-2026-39918: Critical severity, CVSS 9.8 | Vulnix