Vulnerability 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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/givanz/Vvveb/commit/5162c1639130bd080ab63c7d856788cd59d6b3b7
- https://github.com/givanz/Vvveb/releases/tag/1.0.8.1
- https://www.vulncheck.com/advisories/vvveb-code-injection-via-installation-endpo
FAQ
What is CVE-2026-39918?
CVE-2026-39918 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...
How severe is CVE-2026-39918?
CVE-2026-39918 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-39918?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.