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CVE-2026-39918

Estado: AplazadaCrítica (9.2)—

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

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de inyección de código PHP (CWE-94) en endpoint de instalación accesible sin autenticación (PR:N, UI:N). AV:N/AC:L indica explotación remota sin privilegios (T1190). El atacante logra ejecución de código arbitrario como usuario del servidor web (T1059).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Vvveb — VvvebAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-39918",
  "cveTags": [],
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        "ssvcData": {
          "id": "CVE-2026-39918",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-04-20T15:30:35.694606Z"
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      }
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    "cvssMetricV40": [
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        "type": "Secondary",
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        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
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          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
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          "valueDensity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
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          "vendor": "givanz",
          "product": "Vvveb",
          "versions": [
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              "version": "0",
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  "published": "2026-04-20T16:16:45.243",
  "references": [
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      "url": "https://github.com/givanz/Vvveb/commit/5162c1639130bd080ab63c7d856788cd59d6b3b7",
      "source": "disclosure@vulncheck.com"
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    {
      "url": "https://github.com/givanz/Vvveb/releases/tag/1.0.8.1",
      "source": "disclosure@vulncheck.com"
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      "url": "https://www.vulncheck.com/advisories/vvveb-code-injection-via-installation-endpoint",
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      "value": "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."
    }
  ],
  "lastModified": "2026-07-14T21:16:47.110",
  "sourceIdentifier": "disclosure@vulncheck.com"
}