FKIE_CVE-2026-3617

Vulnerability from fkie_nvd - Published: 2026-03-21 04:17 - Updated: 2026-04-24 16:27
Severity
6.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Summary
The Paypal Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'amount' and 'name' shortcode attributes in all versions up to, and including, 0.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The swer_paypal_shortcode() function extracts shortcode attributes using extract() and shortcode_atts() at line 89, then directly concatenates the $name and $amount values into HTML input element value attributes at lines 105-106 without applying esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L105
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L106
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L89
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L105
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L106
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L89
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/a9521ae8-e20e-49dd-a402-5521f8d2d98e?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Paypal Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027amount\u0027 and \u0027name\u0027 shortcode attributes in all versions up to, and including, 0.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The swer_paypal_shortcode() function extracts shortcode attributes using extract() and shortcode_atts() at line 89, then directly concatenates the $name and $amount values into HTML input element value attributes at lines 105-106 without applying esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."
    },
    {
      "lang": "es",
      "value": "El plugin Paypal Shortcode para WordPress es vulnerable a cross-site scripting almacenado a trav\u00e9s de los atributos de shortcode \u0027amount\u0027 y \u0027name\u0027 en todas las versiones hasta la 0.3, inclusive. Esto se debe a una sanitizaci\u00f3n de entrada y un escape de salida insuficientes en los atributos de shortcode proporcionados por el usuario. La funci\u00f3n swer_paypal_shortcode() extrae los atributos de shortcode usando extract() y shortcode_atts() en la l\u00ednea 89, luego concatena directamente los valores $name y $amount en los atributos de valor de los elementos de entrada HTML en las l\u00edneas 105-106 sin aplicar esc_attr() ni ninguna otra funci\u00f3n de escape. Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador y superior, inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina inyectada."
    }
  ],
  "id": "CVE-2026-3617",
  "lastModified": "2026-04-24T16:27:44.277",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 2.7,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-21T04:17:30.233",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L105"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L106"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L89"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L105"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L106"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L89"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a9521ae8-e20e-49dd-a402-5521f8d2d98e?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}


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