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CVE-2026-15450

HIGH 8.1 CVSS 3.1
Published
August 1, 2026
Last modified
August 12, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-22
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Description

The Nex Forms – Ultimate Form Builder – Lite plugin for WordPress is vulnerable to arbitrary file deletion via path traversal in versions up to, and including, 9.2.3. This is due to the delete_file() AJAX handler retrieving a file path from the database and passing it directly to unlink() with no validation (no realpath(), basename(), or allowlist check), combined with the insert_record() AJAX handler that lets the same authenticated user store an arbitrary value in the target 'location' column (wp_kses() only strips HTML tags and does not neutralize path traversal or absolute paths). This makes it possible for authenticated attackers, with admin-level access and above, to delete arbitrary files on the affected site's server, including wp-config. When the plugin's user-level option is configured to something else, this may be exploitable with lower privileges.

Affected WordPress components

  • NEX-Forms – Ultimate Forms Plugin for WordPress Plugin · nex-forms-express-wp-form-builder
    Confirmed match Active
    Up to and including 9.2.3
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • webaways NEX-Forms – Ultimate Forms Plugin for WordPress — Up to and including 9.2.3

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.3/includes/classes/class.db.php#L269
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.3/includes/classes/class.db.php#L273
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.3/includes/classes/class.db.php#L805
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3625615%40nex-forms-express-wp-form-builder&new=3625615%40nex-forms-express-wp-form-builder
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/bb5c8cb3-df67-4f2c-869a-48e34f5619ff?source=cve
  • nvd.nist.gov Official NVD record