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CVE-2021-24685

Estado: ModificadaMedia (5.4)—

The Flat Preloader WordPress plugin before 1.5.4 does not enforce nonce checks when saving its settings, as well as does not sanitise and escape them, which could allow attackers to a make logged in admin change them with a Cross-Site Scripting payload (triggered either in the frontend or backend depending on the payload)

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)

Flat Preloader Project — Flat Preloader

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-24685",
  "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:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "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": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "contact@wpscan.com",
      "affectedData": [
        {
          "vendor": "Unknown",
          "product": "Flat Preloader",
          "versions": [
            {
              "status": "affected",
              "version": "1.5.4",
              "lessThan": "1.5.4",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-11-01T09:15:08.727",
  "references": [
    {
      "url": "https://wpscan.com/vulnerability/972ecde8-3d44-4dd9-81e3-643d8737434f",
      "tags": [
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      "source": "contact@wpscan.com"
    },
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      "url": "https://wpscan.com/vulnerability/972ecde8-3d44-4dd9-81e3-643d8737434f",
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "contact@wpscan.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Flat Preloader WordPress plugin before 1.5.4 does not enforce nonce checks when saving its settings, as well as does not sanitise and escape them, which could allow attackers to a make logged in admin change them with a Cross-Site Scripting payload (triggered either in the frontend or backend depending on the payload)"
    },
    {
      "lang": "es",
      "value": "El plugin Flat Preloader de WordPress versiones anteriores a 1.5.4, no aplica la comprobación de nonce cuando guarda su configuración, ni sanea ni escapa de ella, lo que podría permitir a atacantes hacer que un administrador con sesión iniciada la cambie con una carga útil de tipo Cross-Site Scripting (desencadenada en el frontend o en el backend, dependiendo de la carga útil)"
    }
  ],
  "lastModified": "2026-06-17T03:40:27.187",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "21614270-86EC-4080-8CBB-D2708C96FBDC",
              "versionEndExcluding": "1.5.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "contact@wpscan.com"
}