FKIE_CVE-2026-58409

Vulnerability from fkie_nvd - Published: 2026-07-13 21:16 - Updated: 2026-10-24 22:10
Summary
ChurchCRM is an open-source church management system. Prior to version 7.4.0, an authenticated administrator can achieve Remote Code Execution (RCE) on the server by installing a malicious plugin ZIP archive containing a PHP webshell. The application explicitly includes 'php' in its ALLOWED_EXTENSIONS list, while the dangerous extensions denylist (DENIED_EXTENSIONS) fails to block standard .php files. Because `php` is explicitly included in the allowed extension list for plugin archives, and extracted files are placed directly under the web root, any PHP file inside the ZIP becomes immediately executable via HTTP — without even needing to "enable" the plugin through the application UI. The /plugins/install-url API route (management.php) allows an administrator to source the malicious ZIP from any attacker-controlled HTTPS URL, validating it only against an attacker-supplied SHA-256 hash. This issue has been fixed in version 7.4.0.
Impacted products
Vendor Product Version

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "CRM",
          "vendor": "ChurchCRM",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.4.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ChurchCRM is an open-source church management system. Prior to version 7.4.0, an authenticated administrator can achieve Remote Code Execution (RCE) on the server by installing a malicious plugin ZIP archive containing a PHP webshell. The application explicitly includes \u0027php\u0027 in its ALLOWED_EXTENSIONS list, while the dangerous extensions denylist (DENIED_EXTENSIONS) fails to block standard .php files. Because `php` is explicitly included in the allowed extension list for plugin archives, and extracted files are placed directly under the web root, any PHP file inside the ZIP becomes immediately executable via HTTP \u2014 without even needing to \"enable\" the plugin through the application UI. The /plugins/install-url API route (management.php) allows an administrator to source the malicious ZIP from any attacker-controlled HTTPS URL, validating it only against an attacker-supplied SHA-256 hash. This issue has been fixed in version 7.4.0."
    },
    {
      "lang": "es",
      "value": "ChurchCRM es un sistema de gesti\u00f3n de iglesias de c\u00f3digo abierto. Antes de la versi\u00f3n 7.4.0, un administrador autenticado puede lograr la ejecuci\u00f3n remota de c\u00f3digo (RCE) en el servidor mediante la instalaci\u00f3n de un archivo ZIP de plugin malicioso que contiene una webshell PHP. La aplicaci\u00f3n incluye expl\u00edcitamente \u2019php\u2019 en su lista ALLOWED_EXTENSIONS, mientras que la lista de denegaci\u00f3n de extensiones peligrosas (DENIED_EXTENSIONS) no logra bloquear los archivos .php est\u00e1ndar. Debido a que \u2019php\u2019 est\u00e1 expl\u00edcitamente incluido en la lista de extensiones permitidas para archivos de plugin, y los archivos extra\u00eddos se colocan directamente bajo la ra\u00edz web, cualquier archivo PHP dentro del ZIP se vuelve inmediatamente ejecutable a trav\u00e9s de HTTP - sin siquiera necesitar \u2019habilitar\u2019 el plugin a trav\u00e9s de la interfaz de usuario de la aplicaci\u00f3n. La ruta de API /plugins/install-url (management.php) permite a un administrador obtener el ZIP malicioso desde cualquier URL HTTPS controlada por el atacante, valid\u00e1ndolo \u00fanicamente contra un hash SHA-256 proporcionado por el atacante. Este problema ha sido solucionado en la versi\u00f3n 7.4.0."
    }
  ],
  "id": "CVE-2026-58409",
  "lastModified": "2026-10-24T22:10:00.210",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-58409",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-14T13:06:09.208919Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-13T21:16:48.450",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/ChurchCRM/CRM/security/advisories/GHSA-37mf-vq43-5qp9"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/ChurchCRM/CRM/security/advisories/GHSA-37mf-vq43-5qp9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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