GHSA-28J2-6Q62-7R48

Vulnerability from github – Published: 2026-05-05 06:31 – Updated: 2026-05-05 06:31
VLAI?
Details

The EmailKit plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to and including 1.6.5. This is due to a flawed path traversal validation in the create_template() method of the CheckForm class, where realpath() is called on the allowed base directory (wp-content/uploads/emailkit/templates/) which may not exist, causing it to return false. In PHP 8.x, strpos($real_path, false) implicitly converts false to an empty string, and strpos() with an empty needle always returns 0, causing the check strpos(...) !== 0 to evaluate to false and bypassing the path validation entirely. This makes it possible for authenticated attackers, with Author-level access and above, to read arbitrary files from the server, including sensitive files such as wp-config.php, by supplying an absolute path to the emailkit-editor-template REST API parameter.

Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-5957"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-05T04:16:19Z",
    "severity": "MODERATE"
  },
  "details": "The EmailKit plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to and including 1.6.5. This is due to a flawed path traversal validation in the create_template() method of the CheckForm class, where realpath() is called on the allowed base directory (wp-content/uploads/emailkit/templates/) which may not exist, causing it to return false. In PHP 8.x, strpos($real_path, false) implicitly converts false to an empty string, and strpos() with an empty needle always returns 0, causing the check strpos(...) !== 0 to evaluate to false and bypassing the path validation entirely. This makes it possible for authenticated attackers, with Author-level access and above, to read arbitrary files from the server, including sensitive files such as wp-config.php, by supplying an absolute path to the emailkit-editor-template REST API parameter.",
  "id": "GHSA-28j2-6q62-7r48",
  "modified": "2026-05-05T06:31:05Z",
  "published": "2026-05-05T06:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5957"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/emailkit/tags/1.6.5/includes/Admin/Api/CheckForm.php#L163"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/emailkit/tags/1.6.5/includes/Admin/Api/CheckForm.php#L166"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/emailkit/tags/1.6.5/includes/Admin/Api/CheckForm.php#L170"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/emailkit/tags/1.6.5/includes/Admin/EmailSettings/MetformEmailSettings.php#L252"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/emailkit/trunk/includes/Admin/Api/CheckForm.php#L163"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/emailkit/trunk/includes/Admin/Api/CheckForm.php#L166"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/emailkit/trunk/includes/Admin/Api/CheckForm.php#L170"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/emailkit/trunk/includes/Admin/EmailSettings/MetformEmailSettings.php#L252"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3511701%40emailkit%2Ftrunk\u0026old=3496714%40emailkit%2Ftrunk\u0026sfp_email=\u0026sfph_mail="
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ae58e5b0-b587-4503-8519-c5a50245891a?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:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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  • 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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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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