GHSA-MXP4-75JF-XP7H

Vulnerability from github – Published: 2026-09-01 12:31 – Updated: 2026-09-01 12:31
VLAI
Details

The Live Composer – Free WordPress Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via dslc_module_projects_output Shortcode in all versions up to, and including, 2.1.19 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. WordPress's shortcode-aware kses handling preserves the serialized shortcode body as a placeholder before content filtering runs, allowing attacker-controlled values such as view_all_link, main_heading_link_title, main_filter_title_all, and button_text to reach render-time sinks entirely unescaped.

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-2026-16788"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-01T10:17:11Z",
    "severity": "MODERATE"
  },
  "details": "The Live Composer \u2013 Free WordPress Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via dslc_module_projects_output Shortcode in all versions up to, and including, 2.1.19 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. WordPress\u0027s shortcode-aware kses handling preserves the serialized shortcode body as a placeholder before content filtering runs, allowing attacker-controlled values such as view_all_link, main_heading_link_title, main_filter_title_all, and button_text to reach render-time sinks entirely unescaped.",
  "id": "GHSA-mxp4-75jf-xp7h",
  "modified": "2026-09-01T12:31:47Z",
  "published": "2026-09-01T12:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16788"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6025"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6278"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6312"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6563"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/live-composer-page-builder/tags/2.1.18/modules/projects/module.php#L6743"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3662813%40live-composer-page-builder\u0026new=3662813%40live-composer-page-builder"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a8ae901a-c32a-43d8-b23b-088e695a5823?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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