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CVE-2021-23814

Estado: ModificadaAlta (8.8)—

This affects versions of the package unisharp/laravel-filemanager before 2.6.2. The upload() function does not sufficiently validate the file type when uploading.

An attacker may be able to reproduce the following steps:

1. Install a package with a web Laravel application. 2. Navigate to the Upload window 3. Upload an image file, then capture the request 4. Edit the request contents with a malicious file (webshell) 5. Enter the path of file uploaded on URL - Remote Code Execution

**Note:** Prevention for bad extensions can be done by using a whitelist in the config file(lfm.php). Corresponding document can be found in [here](https://unisharp.github.io/laravel-filemanager/configfolder-categories).

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).

Tecnologías afectadas (1)

Unisharp — Laravel-filemanager

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-23814",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "report@snyk.io",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 1.2
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "report@snyk.io",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "unisharp/laravel-filemanager",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2.6.2",
              "versionType": "semver"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-12-17T20:15:08.340",
  "references": [
    {
      "url": "https://github.com/UniSharp/laravel-filemanager/blob/master/src/Controllers/UploadController.php%23L26",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "source": "report@snyk.io"
    },
    {
      "url": "https://github.com/UniSharp/laravel-filemanager/issues/1113",
      "source": "report@snyk.io"
    },
    {
      "url": "https://github.com/UniSharp/laravel-filemanager/releases/tag/v2.5.1",
      "source": "report@snyk.io"
    },
    {
      "url": "https://github.com/UniSharp/laravel-filemanager/releases/tag/v2.6.2",
      "source": "report@snyk.io"
    },
    {
      "url": "https://security.snyk.io/vuln/SNYK-PHP-UNISHARPLARAVELFILEMANAGER-1567199",
      "source": "report@snyk.io"
    },
    {
      "url": "https://github.com/UniSharp/laravel-filemanager/blob/master/src/Controllers/UploadController.php%23L26",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/UniSharp/laravel-filemanager/issues/1113#issuecomment-1812092975",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://snyk.io/vuln/SNYK-PHP-UNISHARPLARAVELFILEMANAGER-1567199",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "report@snyk.io",
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "This affects versions of the package unisharp/laravel-filemanager before 2.6.2. The upload() function does not sufficiently validate the file type when uploading.\r\rAn attacker may be able to reproduce the following steps:\r\r1. Install a package with a web Laravel application.\r2. Navigate to the Upload window\r3. Upload an image file, then capture the request\r4. Edit the request contents with a malicious file (webshell)\r5. Enter the path of file uploaded on URL - Remote Code Execution\r\r\r**Note:** Prevention for bad extensions can be done by using a whitelist in the config file(lfm.php). Corresponding document can be found in [here](https://unisharp.github.io/laravel-filemanager/configfolder-categories)."
    },
    {
      "lang": "es",
      "value": "Esto afecta al paquete unisharp/laravel-filemanager desde la versión 0.0.0. La función upload() no comprueba suficientemente el tipo de archivo cuando es cargado. Un atacante puede ser capaz de reproducir los siguientes pasos: - Instalar un paquete con una aplicación web Laravel. - Navegar a la ventana de subida - Subir un archivo de imagen, luego capturar la petición - Editar el contenido de la petición con un archivo malicioso (webshell) - Introducir la ruta del archivo subido en la URL - Ejecución de Código Remota. **Nota: La prevención para extensiones malas puede hacerse usando una lista blanca en el archivo de configuración (lfm.php). El documento correspondiente puede encontrarse en [aquí](https://unisharp.github.io/laravel-filemanager/configfolder-categories)"
    }
  ],
  "lastModified": "2026-06-17T03:38:53.513",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:unisharp:laravel-filemanager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4467027F-A375-40AE-AAC5-2A6CD3BC9598",
              "versionStartIncluding": "0.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "report@snyk.io"
}