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CVE-2020-36838

Estado: AplazadaAlta (7.4)—

The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_update_options function in versions up to, and including, 1.5. This flaw makes it possible for low-level authenticated attackers to connect their own Facebook Messenger account to any site running the vulnerable plugin and engage in chats with site visitors on affected sites.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Atacante autenticado (PR:L) explota verificación de capacidades ausente en AJAX para modificar opciones del plugin y conectar cuenta Facebook ajena (T1556: manipulación de autenticación). CWE-284 (autorización deficiente) y acceso remoto dictan T1210.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementPassword PoliciesMulti-factor AuthenticationVulnerability ScanningUser Account ManagementThreat Intelligence Program

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Facebook Chat Plugin — Facebook Chat PluginAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-36838",
  "cveTags": [],
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        "ssvcData": {
          "id": "CVE-2020-36838",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-16T19:13:34.247146Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@wordfence.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.4,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.7,
        "exploitabilityScore": 3.1
      }
    ]
  },
  "affected": [
    {
      "source": "security@wordfence.com",
      "affectedData": [
        {
          "vendor": "facebook",
          "product": "Facebook Chat Plugin – Live Chat Plugin for WordPress",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.6",
              "versionType": "semver"
            }
          ],
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        }
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  "published": "2024-10-16T07:15:09.200",
  "references": [
    {
      "url": "https://www.wordfence.com/blog/2020/08/the-official-facebook-chat-plugin-created-vector-for-social-engineering-attacks/",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/36ae4183-5fa7-484c-b858-5df10ae3d3f2?source=cve",
      "source": "security@wordfence.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@wordfence.com",
      "description": [
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    {
      "lang": "en",
      "value": "The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_update_options function in versions up to, and including, 1.5. This flaw makes it possible for low-level authenticated attackers to connect their own Facebook Messenger account to any site running the vulnerable plugin and engage in chats with site visitors on affected sites."
    },
    {
      "lang": "es",
      "value": "El complemento Facebook Chat para WordPress es vulnerable a la omisión de la autorización debido a una falta de verificación de capacidad en la función wp_ajax_update_options en versiones hasta la 1.5 incluida. Esta falla permite que atacantes autenticados de bajo nivel conecten su propia cuenta de Facebook Messenger a cualquier sitio que ejecute el complemento vulnerable y participen en chats con los visitantes del sitio en los sitios afectados."
    }
  ],
  "lastModified": "2026-06-17T03:16:17.900",
  "sourceIdentifier": "security@wordfence.com"
}