GHSA-54CW-C4V7-GX5M

Vulnerability from github – Published: 2026-05-27 09:31 – Updated: 2026-05-27 09:31
VLAI
Details

The WPCode - Insert Headers and Footers + Custom Code Snippets - WordPress Code Manager plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 2.3.5 This is due to the 'wpcode' custom post type being registered without a custom capability_type or capability restrictions in the wpcode_register_post_type() function, allowing WordPress core to fall back to standard post capabilities for all creation paths including XML-RPC. This makes it possible for authenticated attackers, with author-level access and above, to create and publish executable PHP snippet posts via XML-RPC wp.newPost, which are then executed server-side via eval() in the run_eval() function when the snippet is rendered through the [wpcode] shortcode.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-8832"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T08:16:45Z",
    "severity": "HIGH"
  },
  "details": "The WPCode - Insert Headers and Footers + Custom Code Snippets - WordPress Code Manager plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 2.3.5 This is due to the \u0027wpcode\u0027 custom post type being registered without a custom capability_type or capability restrictions in the wpcode_register_post_type() function, allowing WordPress core to fall back to standard post capabilities for all creation paths including XML-RPC. This makes it possible for authenticated attackers, with author-level access and above, to create and publish executable PHP snippet posts via XML-RPC wp.newPost, which are then executed server-side via eval() in the run_eval() function when the snippet is rendered through the [wpcode] shortcode.",
  "id": "GHSA-54cw-c4v7-gx5m",
  "modified": "2026-05-27T09:31:15Z",
  "published": "2026-05-27T09:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8832"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/insert-headers-and-footers/tags/2.3.5/includes/class-wpcode-snippet-execute.php#L374"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/insert-headers-and-footers/tags/2.3.5/includes/class-wpcode-snippet-execute.php#L415"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/insert-headers-and-footers/tags/2.3.5/includes/execute/class-wpcode-snippet-execute-php.php#L25"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/insert-headers-and-footers/tags/2.3.5/includes/post-type.php#L24"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/insert-headers-and-footers/tags/2.3.5/includes/shortcode.php#L26"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3549060/insert-headers-and-footers/trunk/includes/post-type.php"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Finsert-headers-and-footers/tags/2.3.5\u0026new_path=%2Finsert-headers-and-footers/tags/2.3.6"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/75a2e8b1-d5e0-4f7b-a70a-f0aadf58c778?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.