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CVE-2020-26831

Estado: ModificadaCrítica (9.6)—

SAP BusinessObjects BI Platform (Crystal Report), versions - 4.1, 4.2, 4.3, does not sufficiently validate uploaded XML entities during crystal report generation due to missing XML validation, An attacker with basic privileges can inject some arbitrary XML entities leading to internal file disclosure, internal directories disclosure, Server-Side Request Forgery (SSRF) and denial-of-service (DoS).

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)

SAP — Businessobjects Business Intelligence Platform

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-26831",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "cna@sap.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.0",
          "baseScore": 9.6,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.8,
        "exploitabilityScore": 3.1
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 9.6,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.8,
        "exploitabilityScore": 3.1
      }
    ]
  },
  "affected": [
    {
      "source": "cna@sap.com",
      "affectedData": [
        {
          "vendor": "SAP SE",
          "product": "SAP BusinessObjects BI Platform (Crystal Report)",
          "versions": [
            {
              "status": "affected",
              "version": "< 4.1"
            },
            {
              "status": "affected",
              "version": "< 4.2"
            },
            {
              "status": "affected",
              "version": "< 4.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-12-09T17:15:31.197",
  "references": [
    {
      "url": "https://launchpad.support.sap.com/#/notes/2989075",
      "tags": [
        "Permissions Required"
      ],
      "source": "cna@sap.com"
    },
    {
      "url": "https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cna@sap.com"
    },
    {
      "url": "https://launchpad.support.sap.com/#/notes/2989075",
      "tags": [
        "Permissions Required"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "SAP BusinessObjects BI Platform (Crystal Report), versions - 4.1, 4.2, 4.3, does not sufficiently validate uploaded XML entities during crystal report generation due to missing XML validation, An attacker with basic privileges can inject some arbitrary XML entities leading to internal file disclosure, internal directories disclosure, Server-Side Request Forgery (SSRF) and denial-of-service (DoS)."
    },
    {
      "lang": "es",
      "value": "SAP BusinessObjects BI Platform (Crystal Report), versiones - 4.1, 4.2, 4.3, no comprueba suficientemente las entidades XML cargadas durante la generación del reporte crystal debido a una falta de comprobación XML. Un atacante con privilegios básicos puede inyectar algunas entidades XML arbitrarias conllevando a una divulgación interna de archivos, una divulgación de directorios internos, un Server-Side Request Forgery (SSRF) y denegación de servicio (DoS)"
    }
  ],
  "lastModified": "2026-06-17T03:08:24.950",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:sap:businessobjects_business_intelligence_platform:4.1:-:*:*:*:*:*:*",
              "vulnerable": true,
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            },
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              "matchCriteriaId": "C81DA1FA-54AA-4037-BD28-40509F02BE13"
            }
          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "cna@sap.com"
}