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CVE-2020-26296

Estado: ModificadaAlta (8.7)—

Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. Vega in an npm package. In Vega before version 5.17.3 there is an XSS vulnerability in Vega expressions. Through a specially crafted Vega expression, an attacker could execute arbitrary javascript on a victim's machine. This is fixed in version 5.17.3

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)

Vega Project — Vega

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-26296",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
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    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.7,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.8,
        "exploitabilityScore": 2.3
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.7,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
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    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "vega",
          "product": "vega",
          "versions": [
            {
              "status": "affected",
              "version": "< 5.17.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-12-30T23:15:15.233",
  "references": [
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      "url": "https://github.com/vega/vega/issues/3018",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/vega/vega/pull/3019",
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    {
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        "Third Party Advisory"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "tags": [
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://www.npmjs.com/package/vega",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. Vega in an npm package. In Vega before version 5.17.3 there is an XSS vulnerability in Vega expressions. Through a specially crafted Vega expression, an attacker could execute arbitrary javascript on a victim's machine. This is fixed in version 5.17.3"
    },
    {
      "lang": "es",
      "value": "Vega es una gramática de visualización, un formato declarativo para crear, guardar y compartir diseños de visualización interactivos.&#xa0;Vega en un paquete npm.&#xa0;En Vega versiones anteriores a 5.17.3, se presenta una vulnerabilidad de tipo XSS en las expresiones de Vega.&#xa0;Mediante una expresión Vega especialmente diseñada, un atacante podría ejecutar javascript arbitrario en la máquina de una víctima.&#xa0;Esto es corregido en la versión 5.17.3"
    }
  ],
  "lastModified": "2026-06-17T03:08:01.340",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:vega_project:vega:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7A1B602E-B94B-4BD0-ADF7-2582C27105D2",
              "versionEndExcluding": "5.17.3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}