GHSA-6JWX-V327-2XH9

Vulnerability from github – Published: 2026-04-22 09:31 – Updated: 2026-04-22 09:31
VLAI
Details

The Switch CTA Box plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wppw_cta_box' shortcode in all versions up to, and including, 1.1. This is due to insufficient input sanitization and output escaping on user-supplied post meta values including 'cta_box_button_link', 'cta_box_button_id', 'cta_box_button_text', and 'cta_box_description'. The shortcode reads post meta from a user-specified post ID and echoes these values directly into HTML output without any escaping functions (no esc_attr(), esc_url(), or esc_html()). 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-2026-4088"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T09:16:22Z",
    "severity": "MODERATE"
  },
  "details": "The Switch CTA Box plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027wppw_cta_box\u0027 shortcode in all versions up to, and including, 1.1. This is due to insufficient input sanitization and output escaping on user-supplied post meta values including \u0027cta_box_button_link\u0027, \u0027cta_box_button_id\u0027, \u0027cta_box_button_text\u0027, and \u0027cta_box_description\u0027. The shortcode reads post meta from a user-specified post ID and echoes these values directly into HTML output without any escaping functions (no esc_attr(), esc_url(), or esc_html()). 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-6jwx-v327-2xh9",
  "modified": "2026-04-22T09:31:32Z",
  "published": "2026-04-22T09:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4088"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/switch-cta-box/tags/1.1/inc/box_display_template.php#L14"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/switch-cta-box/tags/1.1/inc/box_display_template.php#L18"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/switch-cta-box/tags/1.1/inc/box_display_template.php#L2"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/switch-cta-box/tags/1.1/inc/shortcode_setup.php#L8"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/switch-cta-box/trunk/inc/box_display_template.php#L14"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/switch-cta-box/trunk/inc/box_display_template.php#L18"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/switch-cta-box/trunk/inc/box_display_template.php#L2"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/switch-cta-box/trunk/inc/shortcode_setup.php#L8"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/19a3fc90-b81c-4451-80e0-cead99a2dcd9?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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