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CVE-2020-27126

Estado: ModificadaMedia (6.1)—

A vulnerability in an API of Cisco Webex Meetings could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks. The vulnerability is due to improper validation of user-supplied input to an application programmatic interface (API) within Cisco Webex Meetings. An attacker could exploit this vulnerability by convincing a targeted user to follow a link designed to submit malicious input to the API used by Cisco Webex Meetings. A successful exploit could allow the attacker to conduct cross-site scripting attacks and potentially gain access to sensitive browser-based information from the system of a targeted user.

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)

Cisco — Webex Meetings

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-27126",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2020-27126",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-11-13T17:22:11.082403Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@cisco.com",
        "cvssData": {
          "scope": "CHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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      },
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          "integrityImpact": "LOW",
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          "confidentialityImpact": "LOW"
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  },
  "affected": [
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      "source": "psirt@cisco.com",
      "affectedData": [
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          "vendor": "Cisco",
          "product": "Cisco Webex Meetings",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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  ],
  "published": "2020-11-18T18:15:12.387",
  "references": [
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-meetings-xss-MX56prER",
      "tags": [
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      "source": "psirt@cisco.com"
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      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-meetings-xss-MX56prER",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-80"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
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          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in an API of Cisco Webex Meetings could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks. The vulnerability is due to improper validation of user-supplied input to an application programmatic interface (API) within Cisco Webex Meetings. An attacker could exploit this vulnerability by convincing a targeted user to follow a link designed to submit malicious input to the API used by Cisco Webex Meetings. A successful exploit could allow the attacker to conduct cross-site scripting attacks and potentially gain access to sensitive browser-based information from the system of a targeted user."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en una API de Cisco Webex Meetings, podría permitir a un atacante remoto no autenticado conducir ataques de tipo cross-site scripting. La vulnerabilidad es debido a una comprobación inapropiada de la entrada suministrada por el usuario a una interfaz de programación de aplicaciones (API) dentro de Cisco Webex Meetings. Un atacante podría explotar esta vulnerabilidad convenciendo a un usuario objetivo de que siga un vínculo diseñado para enviar información maliciosa a la API utilizada por Cisco Webex Meetings. Una explotación con éxito podría permitir al atacante conducir ataques de tipo cross-site scripting y potencialmente conseguir acceso a información confidencial basada en navegador del sistema de un usuario apuntado"
    }
  ],
  "lastModified": "2026-06-17T03:08:50.360",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:cisco:webex_meetings:40.10.2:*:*:*:*:*:*:*",
              "vulnerable": true,
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            }
          ],
          "operator": "OR"
        }
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  ],
  "sourceIdentifier": "psirt@cisco.com"
}