GHSA-P79J-X7G4-4J32

Vulnerability from github – Published: 2026-03-21 06:30 – Updated: 2026-03-21 06:30
VLAI
Details

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.

Severity
6.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-3617"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-21T04:17:30Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-p79j-x7g4-4j32",
  "modified": "2026-03-21T06:30:25Z",
  "published": "2026-03-21T06:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3617"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L105"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L106"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php#L89"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L105"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L106"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php#L89"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a9521ae8-e20e-49dd-a402-5521f8d2d98e?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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