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CVE-2021-3987

Estado: AnalizadaMedia (4.3)—

An improper access control vulnerability exists in janeczku/calibre-web. The affected version allows users without public shelf permissions to create public shelves. The vulnerability is due to the `create_shelf` method in `shelf.py` not verifying if the user has the necessary permissions to create a public shelf. This issue can lead to unauthorized actions being performed by users.

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)

Janeczku — Calibre-web

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-3987",
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          "role": "CISA Coordinator",
          "options": [
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            },
            {
              "automatable": "no"
            },
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              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-11-15T18:27:02.281125Z"
        }
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    "cvssMetricV30": [
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          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
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          "confidentialityImpact": "LOW"
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  "published": "2024-11-15T11:15:06.610",
  "references": [
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      "url": "https://github.com/janeczku/calibre-web/commit/bcdc97641447965af486964537f3821f47b28874",
      "tags": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security@huntr.dev",
      "description": [
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          "value": "CWE-284"
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      "description": [
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    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de control de acceso indebido en janeczku/calibre-web. La versión afectada permite a los usuarios sin permisos de estantería pública crear estanterías públicas. La vulnerabilidad se debe a que el método `create_shelf` en `shelf.py` no verifica si el usuario tiene los permisos necesarios para crear una estantería pública. Este problema puede provocar que los usuarios realicen acciones no autorizadas."
    }
  ],
  "lastModified": "2026-06-17T04:06:20.773",
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