CVE-2026-71280

{
  "id": "CVE-2026-71280",
  "sourceIdentifier": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
  "published": "2026-08-05T13:24:52.573",
  "lastModified": "2026-10-23T21:10:00.157",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "go-shiori's DownloadBookmark (internal/core/download.go) fetches a caller-supplied bookmark URL using a plain http.Client with no custom DialContext or destination-IP validation (no IsLoopback, IsPrivate, IsUnspecified, or IsLinkLocalUnicast checks)."
    },
    {
      "lang": "es",
      "value": "El DownloadBookmark() de go-shiori (internal/core/download.go) obtiene una URL de marcador proporcionada por el llamador utilizando un http.Client simple sin un DialContext personalizado o validación de IP de destino (sin comprobaciones de IsLoopback(), IsPrivate(), IsUnspecified() o IsLinkLocalUnicast()). Un usuario autenticado que crea o actualiza un marcador a través de POST /api/bookmark, PUT /api/v1/bookmarks/cache o POST /api/bookmarks/ext puede proporcionar una URL de loopback (127.0.0.1) o 0.0.0.0 (que Linux redirige a loopback), lo que hace que el servidor realice solicitudes salientes a servicios solo internos, puntos finales de metadatos en la nube u otros recursos restringidos por la red."
    }
  ],
  "affected": [
    {
      "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
      "affectedData": [
        {
          "vendor": "go-shiori",
          "product": "shiori",
          "defaultStatus": "unaffected",
          "programFiles": [
            "internal/core/download.go"
          ],
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "*",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
          "baseScore": 8.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-05T15:50:35.302293Z",
          "id": "CVE-2026-71280",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/go-shiori/shiori",
      "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"
    },
    {
      "url": "https://github.com/go-shiori/shiori/blob/master/internal/core/download.go",
      "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"
    }
  ]
}