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CVE-2021-34620

Estado: ModificadaAlta (8.8)—

The WP Fluent Forms plugin < 3.6.67 for WordPress is vulnerable to Cross-Site Request Forgery leading to stored Cross-Site Scripting and limited Privilege Escalation due to a missing nonce check in the access control function for administrative AJAX actions

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)

Fluentforms — Contact Form

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-34620",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-34620",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-15T19:08:32.904084Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Secondary",
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        "cvssData": {
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          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
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          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@wordfence.com",
      "affectedData": [
        {
          "vendor": "WP Manage Ninja",
          "product": "WP Fluent Forms",
          "versions": [
            {
              "status": "affected",
              "version": "3.6.67",
              "lessThan": "3.6.67",
              "versionType": "custom"
            }
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        }
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    },
    {
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          ],
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          "product": "contact_form",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "3.6.67",
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            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2021-07-07T13:15:08.463",
  "references": [
    {
      "url": "https://plugins.trac.wordpress.org/browser/fluentform/trunk/app/Modules/Acl/Acl.php?rev=2196688",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "source": "security@wordfence.com"
    },
    {
      "url": "https://www.wordfence.com/blog/2021/06/cross-site-request-forgery-patched-in-wp-fluent-forms/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security@wordfence.com"
    },
    {
      "url": "https://plugins.trac.wordpress.org/browser/fluentform/trunk/app/Modules/Acl/Acl.php?rev=2196688",
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    },
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        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@wordfence.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The WP Fluent Forms plugin < 3.6.67 for WordPress is vulnerable to Cross-Site Request Forgery leading to stored Cross-Site Scripting and limited Privilege Escalation due to a missing nonce check in the access control function for administrative AJAX actions"
    },
    {
      "lang": "es",
      "value": "El plugin WP Fluent Forms versiones anteriores a 3.6.67, para WordPress es vulnerable a un ataque de tipo Cross-Site Request Forgery conllevando a una vulnerabilidad de tipo Cross-Site Scripting almacenada y una escalada de privilegios limitada debido a una falta de comprobación de nonce en la función access control para acciones administrativas AJAX"
    }
  ],
  "lastModified": "2026-06-17T03:56:14.657",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:fluentforms:contact_form:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2DEDE465-9C92-4E18-880A-ED8D4839169F",
              "versionEndExcluding": "3.6.67"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@wordfence.com"
}