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CVE-2020-26876

Estado: ModificadaAlta (7.5)—💥 Exploit

El plugin wp-courses versiones hasta 2.0.27 para WordPress, permite a atacantes remotos omitir el paso del pago previsto (para videos y materiales del curso) mediante el uso de la API REST /wp-json, como se explotó "in the wild" en septiembre de 2020. Esto ocurre porque show_in_rest está habilitado para tipos de publicaciones personalizadas (por ejemplo, /wp-json/wp/v2/course y /wp-json/wp/v2/lesson existes)

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

Wpcoursesplugin — Wp-courses

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-26876",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-10-07T17:15:15.863",
  "references": [
    {
      "url": "https://plugins.trac.wordpress.org/changeset/2388997",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset/2389243",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.redtimmy.com/critical-information-disclosure-on-wp-courses-plugin-exposes-private-course-videos-and-materials/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset/2388997",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://plugins.trac.wordpress.org/changeset/2389243",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.redtimmy.com/critical-information-disclosure-on-wp-courses-plugin-exposes-private-course-videos-and-materials/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The wp-courses plugin through 2.0.27 for WordPress allows remote attackers to bypass the intended payment step (for course videos and materials) by using the /wp-json REST API, as exploited in the wild in September 2020. This occurs because show_in_rest is enabled for custom post types (e.g., /wp-json/wp/v2/course and /wp-json/wp/v2/lesson exist)."
    },
    {
      "lang": "es",
      "value": "El plugin wp-courses versiones hasta 2.0.27 para WordPress, permite a atacantes remotos omitir el paso del pago previsto (para videos y materiales del curso) mediante el uso de la API REST /wp-json, como se explotó \"in the wild\" en septiembre de 2020. Esto ocurre porque show_in_rest está habilitado para tipos de publicaciones personalizadas (por ejemplo, /wp-json/wp/v2/course y /wp-json/wp/v2/lesson existes)"
    }
  ],
  "lastModified": "2026-06-17T03:08:26.987",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wpcoursesplugin:wp-courses:*:*:*:*:*:wordpress:*:*",
              "vulnerable": true,
              "matchCriteriaId": "72D8822B-51C8-4A30-8C74-F0EDBAD0B8A7",
              "versionEndIncluding": "2.0.27"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}