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CVE-2021-24243

Estado: ModificadaMedia (5.4)—

An AJAX action registered by the WPBakery Page Builder (Visual Composer) Clipboard WordPress plugin before 4.5.6 did not have capability checks nor sanitization, allowing low privilege users (subscriber+) to call it and set XSS payloads, which will be triggered in all backend pages.

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)

Wpbakery Page Builder Clipboard Project — Wpbakery Page Builder Clipboard

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-24243",
  "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
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "contact@wpscan.com",
      "affectedData": [
        {
          "vendor": "bitorbit",
          "product": "WPBakery Page Builder (Visual Composer) Clipboard",
          "versions": [
            {
              "status": "affected",
              "version": "4.5.0",
              "lessThan": "4.5.0*",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "4.5.6",
              "lessThan": "4.5.6",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-05-06T13:15:11.463",
  "references": [
    {
      "url": "https://codecanyon.net/item/visual-composer-clipboard/8897711",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "source": "contact@wpscan.com"
    },
    {
      "url": "https://wpscan.com/vulnerability/3bc0733a-b949-40c9-a5fb-f56814fc4af3",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "contact@wpscan.com"
    },
    {
      "url": "https://codecanyon.net/item/visual-composer-clipboard/8897711",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://wpscan.com/vulnerability/3bc0733a-b949-40c9-a5fb-f56814fc4af3",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "contact@wpscan.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An AJAX action registered by the WPBakery Page Builder (Visual Composer) Clipboard WordPress plugin before 4.5.6 did not have capability checks nor sanitization, allowing low privilege users (subscriber+) to call it and set XSS payloads, which will be triggered in all backend pages."
    },
    {
      "lang": "es",
      "value": "Una acción AJAX registrada por el plugin WPBakery Page Builder (Visual Composer) Clipboard WordPress versiones anteriores a 4.5.6, no tenía capacidad de comprobación ni saneamiento, permitiendo a usuarios con privilegios bajos (suscriptor+) llamarlo y configurar cargas útiles XSS, que serán activadas en todas las páginas backend"
    }
  ],
  "lastModified": "2026-06-17T03:39:41.643",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wpbakery_page_builder_clipboard_project:wpbakery_page_builder_clipboard:*:*:*:*:*:wordpress:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DA5DA268-C3CD-4D6E-A011-F7DB802030F5",
              "versionEndExcluding": "4.5.6",
              "versionStartIncluding": "4.5.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "contact@wpscan.com"
}