FKIE_CVE-2026-25890

Vulnerability from fkie_nvd - Published: 2026-02-09 22:16 - Updated: 2026-02-20 20:31
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Summary
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Prior to 2.57.1, an authenticated user can bypass the application's "Disallow" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files. This vulnerability is fixed in 2.57.1.
References
security-advisories@github.comhttps://github.com/filebrowser/filebrowser/commit/489af403a19057f6b6b4b1dc0e48cbb26a202ef9Patch
security-advisories@github.comhttps://github.com/filebrowser/filebrowser/releases/tag/v2.57.1Product, Release Notes
security-advisories@github.comhttps://github.com/filebrowser/filebrowser/security/advisories/GHSA-4mh3-h929-w968Exploit, Vendor Advisory
Impacted products
Vendor Product Version
filebrowser filebrowser *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "814A9A1C-C2FE-406B-AD51-62B4A826C6AF",
              "versionEndExcluding": "2.57.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Prior to 2.57.1, an authenticated user can bypass the application\u0027s \"Disallow\" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files. This vulnerability is fixed in 2.57.1."
    },
    {
      "lang": "es",
      "value": "Navegador de Archivos proporciona una interfaz de gesti\u00f3n de archivos dentro de un directorio especificado y se puede utilizar para subir, eliminar, previsualizar, renombrar y editar archivos. Antes de la versi\u00f3n 2.57.1, un usuario autenticado puede eludir las reglas de ruta de archivo \u0027Disallow\u0027 de la aplicaci\u00f3n modificando la URL de la solicitud. Al a\u00f1adir m\u00faltiples barras (por ejemplo, //private/) a la ruta, la comprobaci\u00f3n de autorizaci\u00f3n no logra coincidir con la regla, mientras que el sistema de archivos subyacente resuelve la ruta correctamente, otorgando acceso no autorizado a archivos restringidos. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 2.57.1."
    }
  ],
  "id": "CVE-2026-25890",
  "lastModified": "2026-02-20T20:31:02.080",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-09T22:16:03.873",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/filebrowser/filebrowser/commit/489af403a19057f6b6b4b1dc0e48cbb26a202ef9"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/filebrowser/filebrowser/releases/tag/v2.57.1"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-4mh3-h929-w968"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-706"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.