GHSA-QQ5H-JPGC-P42F

Vulnerability from github – Published: 2026-06-27 09:30 – Updated: 2026-06-27 09:30
VLAI
Details

The Page Builder by SiteOrigin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via panels_data Parameter in all versions up to, and including, 2.34.3 due to insufficient input sanitization and output escaping. 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. This is possible because the nonce and edit_post capability checks enforced during save are both satisfied by Contributor-level users for their own posts, and the panels_data value is stored as post meta — outside the scope of WordPress's unfiltered_html carve-out — meaning no wp_kses fallback prevents the unsanitized WP_Widget_Custom_HTML content from being persisted and later rendered verbatim on the frontend.

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-2026-13295"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-27T08:16:44Z",
    "severity": "MODERATE"
  },
  "details": "The Page Builder by SiteOrigin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via panels_data Parameter in all versions up to, and including, 2.34.3 due to insufficient input sanitization and output escaping. 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. This is possible because the nonce and edit_post capability checks enforced during save are both satisfied by Contributor-level users for their own posts, and the panels_data value is stored as post meta \u2014 outside the scope of WordPress\u0027s unfiltered_html carve-out \u2014 meaning no wp_kses fallback prevents the unsanitized WP_Widget_Custom_HTML content from being persisted and later rendered verbatim on the frontend.",
  "id": "GHSA-qq5h-jpgc-p42f",
  "modified": "2026-06-27T09:30:37Z",
  "published": "2026-06-27T09:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13295"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L1085"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L236"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L254"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/renderer.php#L950"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L1085"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L236"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L254"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/renderer.php#L950"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3585987%40siteorigin-panels\u0026new=3585987%40siteorigin-panels\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7830b3dc-7d20-4516-b4d6-57636ca773e9?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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