FKIE_CVE-2021-24556

Vulnerability from fkie_nvd - Published: 2021-08-23 12:15 - Updated: 2026-06-17 03:40
Severity
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
The kento_email_subscriber_ajax AJAX action of the Email Subscriber WordPress plugin through 1.1, does not properly sanitise, validate and escape the submitted subscribe_email and subscribe_name POST parameters, inserting them in the DB and then outputting them back in the Subscriber list (/wp-admin/edit.php?post_type=kes_campaign&page=kento_email_subscriber_list_settings), leading a Stored XSS issue.
References
contact@wpscan.comhttps://codevigilant.com/disclosure/2021/wp-plugin-email-subscriber/Exploit, Third Party Advisory
contact@wpscan.comhttps://wpscan.com/vulnerability/f050aedc-f79f-4b27-acac-0cdb33b25af8Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://codevigilant.com/disclosure/2021/wp-plugin-email-subscriber/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://wpscan.com/vulnerability/f050aedc-f79f-4b27-acac-0cdb33b25af8Exploit, Third Party Advisory
Impacted products
Vendor Product Version
email-subscriber_project email-subscriber *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Email Subscriber",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThanOrEqual": "1.1",
              "status": "affected",
              "version": "1.1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "contact@wpscan.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:email-subscriber_project:email-subscriber:*:*:*:*:*:wordpress:*:*",
              "matchCriteriaId": "39909212-BE3F-47CF-9A66-981A0E8C340D",
              "versionEndIncluding": "1.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The kento_email_subscriber_ajax AJAX action of the Email Subscriber WordPress plugin through 1.1, does not properly sanitise, validate and escape the submitted subscribe_email and subscribe_name POST parameters, inserting them in the DB and then outputting them back in the Subscriber list (/wp-admin/edit.php?post_type=kes_campaign\u0026page=kento_email_subscriber_list_settings), leading a Stored XSS issue."
    },
    {
      "lang": "es",
      "value": "La acci\u00f3n kento_email_subscriber_ajax del plugin de WordPress Email Subscriber versiones hasta 1.1, no sanea, comprueba y escapa los par\u00e1metros POST subscribe_email y subscribe_name enviados, insert\u00e1ndolos en la base de datos y devolvi\u00e9ndolos a la lista de Suscriptores (/wp-admin/edit.php?post_type=kes_campaign\u0026amp;page=kento_email_subscriber_list_settings), conllevando a un problema de tipo XSS almacenado."
    }
  ],
  "id": "CVE-2021-24556",
  "lastModified": "2026-06-17T03:40:13.867",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-23T12:15:09.957",
  "references": [
    {
      "source": "contact@wpscan.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://codevigilant.com/disclosure/2021/wp-plugin-email-subscriber/"
    },
    {
      "source": "contact@wpscan.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://wpscan.com/vulnerability/f050aedc-f79f-4b27-acac-0cdb33b25af8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://codevigilant.com/disclosure/2021/wp-plugin-email-subscriber/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://wpscan.com/vulnerability/f050aedc-f79f-4b27-acac-0cdb33b25af8"
    }
  ],
  "sourceIdentifier": "contact@wpscan.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "contact@wpscan.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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