# CVE-2026-39918

> Vulnerability · severity: **CRITICAL** (CVSS 9.8).

## 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.

## Key facts

- **CVE ID:** CVE-2026-39918
- **Published:** 2026-04-20
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.8
- **CWE codes:** CWE-94

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-39918

## Citation

> AI Analytics. CVE-2026-39918. Retrieved 2026-08-08 from https://api.ai-analytics.org/cve/CVE-2026-39918. Derived from NIST NVD. Licensed CC0.

---

*[Dataset catalog](https://api.ai-analytics.org/datasets/) · [AI Analytics](https://api.ai-analytics.org/) · CC0 1.0*