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CVE-2021-24454

Estado: ModificadaMedia (6.1)—

In the YOP Poll WordPress plugin before 6.2.8, when a pool is created with the options "Allow other answers", "Display other answers in the result list" and "Show results", it can lead to Stored Cross-Site Scripting issues as the 'Other' answer is not sanitised before being output in the page. The execution of the XSS payload depends on the 'Show results' option selected, which could be before or after sending the vote for example.

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)

Yop-poll — YOP Poll

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-24454",
  "cveTags": [],
  "metrics": {
    "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": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "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",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "contact@wpscan.com",
      "affectedData": [
        {
          "vendor": "Unknown",
          "product": "YOP Poll",
          "versions": [
            {
              "status": "affected",
              "version": "6.2.8",
              "lessThan": "6.2.8",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-07-12T20:15:09.850",
  "references": [
    {
      "url": "https://wpscan.com/vulnerability/48ade7a5-5abb-4267-b9b6-13e31e1b3e91",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "contact@wpscan.com"
    },
    {
      "url": "https://www.in-spired.xyz/discovering-wordpress-plugin-yop-polls-v6-2-7-stored-xss/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "contact@wpscan.com"
    },
    {
      "url": "https://wpscan.com/vulnerability/48ade7a5-5abb-4267-b9b6-13e31e1b3e91",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.in-spired.xyz/discovering-wordpress-plugin-yop-polls-v6-2-7-stored-xss/",
      "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": "In the YOP Poll WordPress plugin before 6.2.8, when a pool is created with the options \"Allow other answers\", \"Display other answers in the result list\" and \"Show results\", it can lead to Stored Cross-Site Scripting issues as the 'Other' answer is not sanitised before being output in the page. The execution of the XSS payload depends on the 'Show results' option selected, which could be before or after sending the vote for example."
    },
    {
      "lang": "es",
      "value": "En el plugin YOP Poll de WordPress versiones anteriores a 6.2.8, cuando es creado un pool con las opciones \"Allow other answers\", \"Display other answers in the result list\" y \"Show results\", puede conllevar a problemas de tipo Cross-Site Scripting Almacenado ya que la respuesta \"Other\" no es saneado antes de salir en la página. una ejecución de la carga útil XSS depende de la opción \"Show results\" seleccionada, que podría ser antes o después de enviar el voto, por ejemplo"
    }
  ],
  "lastModified": "2026-06-17T03:40:03.483",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:yop-poll:yop_poll:*:*:*:*:*:wordpress:*:*",
              "vulnerable": true,
              "matchCriteriaId": "885C6414-0549-4260-8A0B-7758CE9AD39E",
              "versionEndExcluding": "6.2.8"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "contact@wpscan.com"
}