CVE-2026-66398

{
  "id": "CVE-2026-66398",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-27T16:18:12.493",
  "lastModified": "2026-10-24T13:10:00.147",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "phpMyFAQ before v4.1.6 contains a remote code execution vulnerability in the configuration API that allows authenticated administrators with CONFIGURATION_EDIT and ATTACHMENT_ADD privileges to write arbitrary PHP files by manipulating the upgrade.lastDownloadedPackage setting. Attackers can upload a malicious ZIP file as an attachment, point the updater configuration to its stored path, and extract it into the application root to achieve code execution as the web server user."
    },
    {
      "lang": "es",
      "value": "phpMyFAQ anterior a la v4.1.6 contiene una vulnerabilidad de ejecución remota de código en la API de configuración que permite a administradores autenticados con privilegios CONFIGURATION_EDIT y ATTACHMENT_ADD escribir archivos PHP arbitrarios manipulando la configuración ’upgrade.lastDownloadedPackage’. Los atacantes pueden subir un archivo ZIP malicioso como adjunto, apuntar la configuración del actualizador a su ruta almacenada y extraerlo en la raíz de la aplicación para lograr la ejecución de código como el usuario del servidor web."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "thorsten",
          "product": "phpMyFAQ",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThan": "4.1.6",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "4.1.6",
              "versionType": "semver",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 9.4,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "subAvailabilityImpact": "HIGH",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-27T16:21:02.480292Z",
          "id": "CVE-2026-66398",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-494"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-4fv7-8rr6-rf2w",
      "source": "[email protected]"
    },
    {
      "url": "https://www.vulncheck.com/advisories/phpmyfaq-before-remote-code-execution-via-configuration-api",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-4fv7-8rr6-rf2w",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}